U.S. Marines with Regional Command (Southwest) and Marine Medium Tiltrotor Squadron 264 watch an MV-22 Osprey fly past en route to Forward Operating Base Shir Ghazay, Afghanistan, April 19, 2013. Lt. Gen. Robert Neller, commanding general of Marine Corps Forces Central Command, conducted a battlefield circulation visit to FOB Shir Ghazay to speak with the Marines of 1st Tank Battalion, Regimental Combat Team 7. (U.S. Marine Corps Photo by Sgt. Tammy K. Hineline/Released)