Senior Airman Erik Bernyk, 96th Civil Engineer Squadron, marks the date and time on the tape of the asset before covering it as part of contamination avoidance measures during the Phase II exercise Aug. 10 at Eglin Air Force Base, Fla. More than 100 airmen braved black flag conditions in chemical gear and gas masks to accomplish their missions. The Phase II was part of a large week-long Operational Readiness Exercise on base.