Afghan National Army commandos of the 8th Special Operations Kandak assume perimeter defensive positions after performing a tactical helicopter exit during a training exercise in Pul-E-Alam district, Logar province, Jan. 30, 2014. The commandos conducted the training to expand the 8th SOK's capabilities and effectiveness when conducting independent operations to improve security in the area. (U.S. Navy Photograph by Chief Mass Communication Specialist Bill Mesta/ Released)