Lance Cpl. Julius T. Donath a chemical, biological, radiological, and nuclear defense (CBRN) specialist with the 13th Marine Expeditionary Unit, samples a mustard agent from a CBRN site 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