U.S. Marine Corps Cpl. Brannon D. Armistead assigned to Chemical, Biological, Radiological and Nuclear (CBRN) Defense, 1st Marine Logistics Group, uses a syringe to extract a liquid sample to test during a CBRN Defense challenge on Marine Corps Air Station Miramar, San Diego, Calif., April 28, 2015. The training sustained the Marines' proficiency in conducting operations while protecting themselves against the threat of CBRN contamination. (U.S. Marine Corps photo by Cpl. Laura Y. Raga/RELEASED)
Chief Warrant Officer Benjamin Barr
2015-04-28
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