A CH-46 Sea Knight helicopter piloted by a U.S. Marine assigned to Marine Medium Helicopter Squadron 262, Aviation Combat Element, 31st Marine Expeditionary Unit (MEU) descend on the air field in order to extract Marines who have just completed a mechanized raid in Tinian, Guam on Sept. 12, 2012. The Marines are conducting the raid as a part of the 31st MEU's certification exercise 2012. (U.S. Marine Corps photo by LCpl Caleb Hoover/Released)