U.S. Navy Hospital Corpsman 3rd Class Viliame Tokalautawa,

U.S. Navy Hospital Corpsman 3rd Class Viliame Tokalautawa, left, field corpsman with Marine Wing Headquarters Squadron (MWHS) 3, 3rd Marine Aircraft Wing (MAW), takes vital signs of U.S. Marine Corps Pfc. Kris Guardiario, chemical, biological, radiological and nuclear (CBRN) defense specialist with MWHS-3, 3rd MAW, after a training exercise at Marine Corps Air Station Miramar, San Diego, Calif., April 30, 2013. Tokalautawa and Guardiario took part in training to increase mission readiness and rehearse standard operating procedures and responses to CBRN scenarios. (U.S. Marine Corps photo by Sgt. Keonaona C. Paulo 3rd Marine Aircraft Wing Combat Camera/Released)