US Air Force (USAF) MASTER Sergeant (MSGT) David McCarthy, 4th Combat Camera Squadron (CCS), wears his Mission-Oriented Protective Posture response level 4 (MOPP-4) gears as he inputs images into his laptop computer during a simulated chemical attack, conducted during Exercise CRISIS REACH 02-19B, at the Combat Readiness Training Center (CRTC), located at the Savannah International Airport (IAP), Georgia (GA)