A C-17A Globemaster III from Dover Air Force Base, Del., practices low-level terrain masking techniques over the Bollen Live-Fire Range Complex during a training mission Feb. 6, 2014, at Fort Indiantown Gap, Pa. Bollen Range supports live-fire training activities for most fighter units as well as helicopter, heavy transport and special mission aircraft in the northeastern United States. (U.S. Air Force photo/Greg L. Davis)