The crew chief of a U.S. Marine Corps MV-22B Osprey tiltrotor aircraft mans an M2 Browning .50 caliber Machine Gun over the Helmand River in Helmand province, Afghanistan June 18, 2012. The Osprey transported U.S. Marine Corps Maj. Gen. David H. Berger, Task Force Leatherneck commanding general, and Afghan National Police (ANP) Col. Abdul Nabi Elham, Helmand Provincial Chief of Police, to Kajaki to review the status of operations of Marines with 1st Battalion, 8th Marine Regiment, Regimental Combat Team 6 and ANP.