Col. Patrick Gramuglia, commanding officer of Marine

Col. Patrick Gramuglia, commanding officer of Marine Aircraft Group 16 from Marine Corps Air Station Miramar, left, walks with Chief Warrant Officer 2nd Class James Williford of Lancaster, Calif., senior ranking official and operation coordinator of Marine Wing Support Squadron 374, from Marine Corps Air Ground Combat Center at Twentynine Palms, Calif., during a field exercise to maintain remote landing zones for continued safe use. Marines from MWSS 374 sprayed the surface with a dust-control compound in advance of Gramuglia's arrival aboard MV-22B Osprey tilt-rotor aircraft, in background, to evaluate effectiveness of the product. (U.S. Navy photo by Greg Vojtko/Released)