Law enforcement

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class="nist-page__region nist-page__region--content tablet-lg:grid-col-12" > <div class="nist-block" > <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">News and Updates</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-d662644d91f92b5a9d36f4ea4330bd1429fdb15e60df232da3c735ea7752f7a9"> <div> <article about="/news-events/news/2024/08/nist-researchers-test-new-approach-detecting-cannabis-breath" typeof="schema:Article" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/news/2024/08/nist-researchers-test-new-approach-detecting-cannabis-breath" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2024/08/15/BreathStudyIllustration.png?itok=YDOkCizk" width="100" height="56" alt="A researcher's hands holding a vial in the lab are juxtaposed with a cannabis plant. " typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/news/2024/08/nist-researchers-test-new-approach-detecting-cannabis-breath"><span property="schema:name">NIST Researchers to Test New Approach for Detecting Cannabis in Breath</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-08-15T12:00:00Z">August 15, 2024</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> The new approach involves two breath tests separated by a specified time interval. </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2024/07/nists-new-hemp-reference-material-will-help-ensure-accurate-cannabis" typeof="schema:Article" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/news/2024/07/nists-new-hemp-reference-material-will-help-ensure-accurate-cannabis" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2024/06/27/NIST_Hemp_RM_1.jpg?itok=CtxxzFOi" width="100" height="56" alt="A person wearing a mask and laboratory gloves handles ground plant material inside a metal container." typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/news/2024/07/nists-new-hemp-reference-material-will-help-ensure-accurate-cannabis"><span property="schema:name">NIST’s New Hemp Reference Material Will Help Ensure Accurate Cannabis Measurements</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-07-08T12:00:00Z">July 8, 2024</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> This will help forensic labs correctly determine whether a seized material is hemp, which is legal in all 50 states, or marijuana, which is a controlled </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2024/01/spotlight-forensics-videos-and-app-collecting-trace-evidence" typeof="schema:Article" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/news/2024/01/spotlight-forensics-videos-and-app-collecting-trace-evidence" hreflang="en"><img loading="lazy" src="/sites/default/files/images/2024/01/08/Casting1.gif" width="720" height="405" alt="Person pours a cream-colored liquid alongside a shoeprint in the dirt." typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/news/2024/01/spotlight-forensics-videos-and-app-collecting-trace-evidence"><span property="schema:name">Spotlight: Forensics Videos and App for Collecting Trace Evidence</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-01-08T12:00:00Z">January 8, 2024</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> When it comes to crime scene investigation, a lot needs to happen behind the scenes so that judges and juries can trust the validity of evidence presented at </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/news-events/news-updates/topic/249321">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Events</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-9de32f76d1cf287a21347711c552c099d9ea32aacd3e9c0acd417563d57fa03e"> <div> <article about="/news-events/events/2025/06/5x5-public-safety-innovation-summit" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/events/2025/06/5x5-public-safety-innovation-summit" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2024/10/28/5x5_WebBanner_Seattle2025.jpg?itok=87x0TzcM" width="100" height="35" alt="5x5 Public Safety Innovation Summit" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/events/2025/06/5x5-public-safety-innovation-summit"><span>5x5: The Public Safety Innovation Summit</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Tue, Jun 3 - Thu, Jun 5 2025</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> REGISTER NOW 5x5 ― the confirmation of a strong and clear signal ― and the place to make your voice heard and drive </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/news-events/upcoming-events/topic/249321">View All Events</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Projects and Programs</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-0bc2c8a7ea033f05aba5e26e0d8866c7f6deaf5ef58d05f8eb2463c80a5b45bd"> <div> <article about="/programs-projects/safety-and-security-technologies" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/programs-projects/safety-and-security-technologies" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/stg_0.jpg?itok=EEiV7iv-" width="98" height="100" alt="STG" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/safety-and-security-technologies"><span>Safety and Security Technologies</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The safety and security of citizens is enhanced when law enforcement and criminal justice agencies and the military use the appropriate and properly performing equipment and technologies. To ensure these entities have the necessary equipment, the STG conducts and performs research to advance these </div> </div> </div> </article> </div> <div> <article about="/programs-projects/vapor-sampling-support-public-safety-and-forensics" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/programs-projects/vapor-sampling-support-public-safety-and-forensics" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2020/07/10/Dvme-Schematic.PNG?itok=0p0XuuJc" width="100" height="100" alt="Dvme-Schematic" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/vapor-sampling-support-public-safety-and-forensics"><span>Vapor Sampling to Support Public Safety and Forensics</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Vapor pressures of unstable, reactive compounds. Over the last decade, our group has investigated a variety of low-volatility compounds including taggants (found in explosives), biofuels, terpenes and cannabinoids. Dynamic vapor microextraction (DVME), developed at NIST, is a small-volume dynamic </div> </div> </div> </article> </div> <div> <article about="/programs-projects/forensic-chemistry" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/forensic-chemistry"><span>Forensic Chemistry</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Drug Analysis - Opioids and Emerging Threats This program primarily seeks to support the needs of the > 400 publicly funded state, local, and tribal forensic laboratories in the United States. The increased complexity of the analysis needed to keep pace with these emerging threats has resulted in </div> </div> </div> </article> </div> <div> <article about="/programs-projects/glass-evidence-analysis" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/programs-projects/glass-evidence-analysis" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2020/07/17/III_0_C.png?itok=JUzQlLgp" width="100" height="88" alt="Photo of broken laminated windshield glass" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/glass-evidence-analysis"><span>Glass Evidence Analysis</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Quantitative XRF Glass Database Recent research efforts in the forensic trace field have focused on the development of databases to assign a significance to forensic evidence (i.e., to report the strength of an association or exclusion). In the forensic analysis of glass using µ-XRF, samples are </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/laboratories/projects-programs/topic/249321">View All Projects/Programs</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Publications</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-7a6e8b9567cba0f9a27d00e63731ed9bc815ece39ece8ba3bb93ca5269e67447"> <div> <article about="/publications/drug-detection-analysis-and-monitoring-workshop-report" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/drug-detection-analysis-and-monitoring-workshop-report"><span>Drug Detection, Analysis, and Monitoring Workshop Report</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-08-30T12:00:00Z">August 30, 2024</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Edward Sisco</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> This report is a summary of a workshop convened to capture the analytical and data challenges inherent to the detection, identification, and monitoring of </div> </div> </div> </article> </div> <div> <article about="/publications/redundant-ballistic-chronograph-configuration-body-armor-testing" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/redundant-ballistic-chronograph-configuration-body-armor-testing"><span>Redundant Ballistic Chronograph Configuration for Body Armor Testing</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-07-28T12:00:00Z">July 28, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Michael A. Riley</span>, <span class="nist-author">Nicholas G. Paulter Jr.</span>, <span class="nist-author">Dwight D. Barry</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> A new configuration of the light screen pairs used in a redundant ballistic chronograph is described. This configuration complies with current ASTM </div> </div> </div> </article> </div> <div> <article about="/publications/field-deployable-devices" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/field-deployable-devices"><span>Field-Deployable Devices</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-01T12:00:00Z">January 1, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Thomas P. Forbes</span>, Raychelle Burks</div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Reductions in instrument size, weight, and power continue to facilitate the development and application of field-deployable devices for investigative purposes </div> </div> </div> </article> </div> <div> <article about="/publications/effects-thermal-aging-molar-mass-ultra-high-molar-mass-polyethylene-fibers" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/effects-thermal-aging-molar-mass-ultra-high-molar-mass-polyethylene-fibers"><span>Effects of Thermal Aging on Molar Mass of Ultra-High Molar Mass Polyethylene Fibers</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-03-24T12:00:00Z">March 24, 2022</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Zois Tsinas</span>, <span class="nist-author">Sara Orski</span>, Viviana Bentley, <span class="nist-author">Lorelis Gonzalez-Lopez</span>, Mohamad Al-Sheikhly, <span class="nist-author">Amanda L. Forster</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Ultra-high molar mass polyethylene (UHMMPE) is commonly used for ballistic-resistant body armor applications due to the superior strength of the fibers </div> </div> </div> </article> </div> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Tools and Instruments</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-0c0cecffd69fda67dba8f5ed651d91e6d5d9abac619459ec7e0ce2c2f408dbda"> <div> <article about="/laboratories/tools-instruments/large-aperture-scanner" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/laboratories/tools-instruments/large-aperture-scanner" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2017/10/18/large_aperture_scanner.png?itok=rqBqObNd" width="89" height="100" alt="Large Aperture Scanner" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/laboratories/tools-instruments/large-aperture-scanner"><span>Large Aperture Scanner</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The Large Aperture Scanner (LAS) scans a radar transceiver over a 5 meter by 20 meter aperture. Image reconstruction techniques enable a three-dimensional </div> </div> </div> </article> </div> <div> <article about="/laboratories/tools-instruments/cabinet-x-ray-system" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/laboratories/tools-instruments/cabinet-x-ray-system" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2017/10/18/smiths_detection_6046si.jpg?itok=cjxPt8Kn" width="75" height="100" alt="Smiths Detection_6046si" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/laboratories/tools-instruments/cabinet-x-ray-system"><span>Cabinet x-ray system</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The Smiths Detection 6046si cabinet x-ray system was designed for security screening of bags, parcels and other objects of similar size. The system runs at 160 </div> </div> </div> </article> </div> <div> <article about="/laboratories/tools-instruments/x-ray-backscatter-systems" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/laboratories/tools-instruments/x-ray-backscatter-systems" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2017/10/19/x-ray_backscatter_systems.jpg?itok=re-OLauK" width="100" height="75" alt="X-ray backscatter systems" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/laboratories/tools-instruments/x-ray-backscatter-systems"><span>X-ray Backscatter Systems</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> X-ray backscatter systems are used for the screening of personnel for hidden weapons and other contraband. Unlike conventional radiographic x-ray systems </div> </div> </div> </article> </div> <div> <article about="/laboratories/tools-instruments/4-m-drop-tower-instrumented-impactor" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/laboratories/tools-instruments/4-m-drop-tower-instrumented-impactor" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2017/11/17/droptower202.jpg?itok=APNnoDIB" width="100" height="66" alt="droptower202" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/laboratories/tools-instruments/4-m-drop-tower-instrumented-impactor"><span>4 m Drop Tower with Instrumented Impactor</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The Security Technologies Group has a 4-m-tall drop tower that can be configured for a wide variety of impact and impact-related testing. This drop tower is </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/laboratories/tools-instruments/topic/249321">View All Tools & Instruments</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> </div> <div class="margin-y-4"> </div> </div> </div> </div> </div> <div class="grid-container"> </div> </section> </section> </div> <div data-elastic-exclude>  <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo" width="300px" height="42px" /> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="tel:301-975-2000">301-975-2000</a> </address> <p> <a href="mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--x-white" href=" https://x.com/NIST"> <span>X.com</span> </a> <a class="nist-social nist-social--facebook-white" href=" https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href=" https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href=" https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href=" https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href=" https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href=" https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href=" https://public.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? 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