Soldiers from the Army Reserve's Bravo and Delta Companies, 5th Battalion, 159th Aviation Regiment, stand with a CH-47 Chinook at Fort Eustis, Va., Jan. 10, 2013. The battalion is currently serving in the Defense CBRN Response Force, a task force established to support relief efforts following catastrophic terrorist or natural disaster events. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)