ROLL RIGORS U.S. Army paratroopers practice parachute landing and rolling techniques during "Large Package Week," an exercise on Pope Air Force Base, N.C., Feb. 10, 2011. The paratroopers are assigned to the 82nd Airborne Division. The exercise uses several Air Force C-130 and C-17 aircraft to strategically airdrop troops and cargo onto a specified location to prepare for real- world response. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 973386-O-ETO36-335.jpg Photo Gallery