Bivouac Exercise
HOLLOMAN AIR FORCE BASE, N.M. – Airmen from the 49th Civil Engineer and Materiel Maintenance Squadrons assume level four mission-oriented protective postures, including rubber gloves, boots, gas masks, and a chemical protection suit, during a Bivouac exercise April 11. Level four MOPP gear gives protection for chemical, biological, radiological, nuclear and explosive materials. (U.S. Photo by Airman 1st Class Michael Shoemaker/Released)