A crew chief with Marine Medium Tiltrotor Squadron (VMM) 165 looks outside an MV-22B Osprey during a training flight from Marine Corps Air Station Miramar to Marine Corps Base Camp Pendleton, Calif., June 8. Crew chiefs aboard the Osprey assisted with maintaining visuals during the flight for the pilots. (U.S. Marine Corps photo by Sgt. Michael Thorn/Released) - A crew chief with Marine Medium Tiltrotor Squadron (VMM) 165 looks outside an MV-22B Osprey during a training flight from Marine Corps Air Station Miramar to Marine Corps Base Camp Pendleton, Calif., June 8. Crew chiefs aboard the Osprey assisted with maintaining visuals during the flight for the pilots. (U.S. Marine Corps photo by Sgt. Michael Thorn/Released)

Marines with Marine Medium Tiltrotor Squadron (VMM) 165 attach buckets to an MV-22B Osprey to perform dumps during a firefighting exercise supporting the California Department of Forestry and Fire Protection aboard Hemet-Ryan Air Attack Base, Calif., Feb. 11. The Marines with VMM-165 flew out to the Diamond Valley Lake on Hemet-Ryan Air Attack Base with an MV-22B Osprey to perform bucket dips in an effort to prove the aircraft was capable of such training while supporting Cal Fire. - Marines with Marine Medium Tiltrotor Squadron (VMM) 165 attach buckets to an MV-22B Osprey to perform dumps during a firefighting exercise supporting the California Department of Forestry and Fire Protection aboard Hemet-Ryan Air Attack Base, Calif., Feb. 11. The Marines with VMM-165 flew out to the Diamond Valley Lake on Hemet-Ryan Air Attack Base with an MV-22B Osprey to perform bucket dips in an effort to prove the aircraft was capable of such training while supporting Cal Fire.

Marines with 1st Marine Division, 5th Regiment, set up a perimeter during an insertion and extraction exercise aboard Marine Corps Base Camp Pendleton, Calif., Oct. 25. Ground Marines simulate a hostile environment as much as possible to prepare for a real scenario. - Marines with 1st Marine Division, 5th Regiment, set up a perimeter during an insertion and extraction exercise aboard Marine Corps Base Camp Pendleton, Calif., Oct. 25. Ground Marines simulate a hostile environment as much as possible to prepare for a real scenario.