USS PELELIU (April 26, 2013) Squad leaders from Security Platoon, Maritime Raid Force, 15th Marine Expeditionary Unit, practice calling for fire using the Digital Virtual Training Environment during a modified joint fires observer class on USS Peleliu, April 26. Calling for fire or calling in a casualty evacuation are tasks normally associated with a scout observer or joint terminal attack controller who are a part of the artillery military occupational field, but specialize in controlling aircraft for specific missions. The scout observers with the Command Element, 15th MEU, held a class to help prepare the MRF for the variety of missions that scout observers typically conduct such as controlling aircraft for air strikes or requesting casualty evacuations. The 15th MEU is deployed as part of the Peleliu Amphibious Ready Group and is comprised of approximately 2,400 Marines and sailors. Together with Amphibious Squadron Three, they provide a forward-deployed, flexible sea-based Marine Air Ground Task Force capable of conducting a wide variety of operations ranging from humanitarian aid to combat. (U.S. Marine Corps photo by Cpl. John Robbart III/Released)