Members of the I Marine Expeditionary Force from Marine Corps Base Camp Pendleton, Calif., advance the desert during a simulated Tactical Recovery of Aircraft and Personnel scenario, Feb 22, 2017, at the Playas Training and Research Center, N.M. During the scenario, the IMEF rescued isolated personnel from a downed aircraft while fending off mock opposition forces from Davis-Monthan Air Force Base, Ariz.’s 563d Operations Support Squadron. This joint effort prepared the IMEF by completing their Special Purpose Marine Air Ground Task Force certification. This is the culmination of their crisis response operations before deploying to the United States Central Command, which consists of 20 countries In Northeast Africa and Southwest Asia. (U.S. Air Force photo by Airman 1st Class Greg Nash)