U.S. Soldiers of Operational Detachment Alpha, with the 7th Special Forces Group (Airborne), run towards a CH-47 Chinook helicopter during a training event at Eglin Air Force Base, Fla., Feb. 5, 2013. Green Beret Soldiers of 7th Special Forces Group practiced Special Purpose Insertion Extraction, a technique used to rapidly insert or extract Soldiers from terrain that does not allow helicopters to land. (U.S. Army photo by Spc. Steven Young/Released)