Marines Sgt. Raymond S. Perry ,left, and Lance Cpl. Julius T. Donath, right, chemical, biological, radiological, and nuclear (CBRN) defense specialists with the 13th Marine Expeditionary Unit, gather their detection and sampling equipment before entering a CBRN threat area during Tactical Site Exploitation (TSE) training, Feb. 6, 2018, Camp Pendleton, California. The TSE training was conducted to increase the Marines' skills in a CBRN threat environment to prepare them for future deployments. ( Marine Corps photo by Sgt. Joshua Jackson)

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Keywords: 13th, cbrn, eod, expeditionary, exploitation, marine, medical, meu, site, tactical, tse, unit