Island Defenders: Guam guardsmen protect expeditionary base, coalition mission
U.S. Air National Guard Master Sgt. Oscar Espinosa, 407th Expeditionary Security Forces flight chief, center, gives instructions to Airmen and U.S. Marines during a guardmount briefing at an undisclosed location in Southwest Asia, May 10, 2017. Espinosa, a guardsman with the 254th Security Forces Squadron from Andersen Air Force Base, deployed in support of Operation Inherent Resolve. As flight chief, Espinosa coordinates gate guard and patrol teams from both services and international coalition members. (U.S. Air Force photo/Staff Sgt. Alexander W. Riedel)