Marines and Sailors with the Chemical Biological Incident Response Force, II Marine Expeditionary Force practice their decontamination skills on a volunteer during a training evolution at the Guardian Center in Perry, Ga. on February 4, 2015. The training aims to provide the Marines and Sailors with realistic crisis response scenarios. (Photo by: Sgt. Fareeza Ali/USMC) - Marines and Sailors with the Chemical Biological Incident Response Force, II Marine Expeditionary Force practice their decontamination skills on a volunteer during a training evolution at the Guardian Center in Perry, Ga. on February 4, 2015. The training aims to provide the Marines and Sailors with realistic crisis response scenarios. (Photo by: Sgt. Fareeza Ali/USMC)

Cpl. Donte Dukes, an Extract Marine with the Chemical Biological Incident Response Force, pulls a casualty sled during the third and final phase of the Commander’s Challenge on Nov. 6. - Cpl. Donte Dukes, an Extract Marine with the Chemical Biological Incident Response Force, pulls a casualty sled during the third and final phase of the Commander’s Challenge on Nov. 6.

STUMP NECK ANNEX, Md. (April 6, 2011) Lt.Gen. John Paxton Jr., Commanding General for II Marine Expeditionary Force (l.), is briefed on the equipment used by CBIRF's Incident Response Teams to conduct downrange sampling and processing. (U.S. Navy photo by Gary Wagner/Released) - STUMP NECK ANNEX, Md. (April 6, 2011) Lt.Gen. John Paxton Jr., Commanding General for II Marine Expeditionary Force (l.), is briefed on the equipment used by CBIRF's Incident Response Teams to conduct downrange sampling and processing. (U.S. Navy photo by Gary Wagner/Released)