Four tents contain the majority of airfield operations for Exercise Gateway Relief at MidAmerica St. Louis Airport in Mascoutah, Ill., on Aug. 7, 2013. The Kentucky Air Guard's 123rd Contingency Response Group is teaming up with the U.S. Army's 689th Rapid Port Opening Element from Fort Eustis, Va., through Aug. 9 to operate a Joint Task Force-Port Opening in support of the exercise, an earthquake-relief scenario directed by U.S. Transportation Command. (U.S. Air National Guard photo by Maj. Dale Greer/Released)