U.S. Army medics complete a Chemical, Biological, Radiological, Nuclear (CBRN) reaction lane during the CSM Jack L. Clark Jr. Best Medic Competition at Fort Sam Houston, San Antonio, Texas, Feb. 13, 2025. The lane tested the medics ability to react to a simulated CBRN attack, don Mission Oriented Protective Posture level 4 gear, and complete various medical tasks in a timed competitive environment. (U.S. Army video by Sgt. Jarrett Johnson)