Members of the 633rd Security Forces Squadron Emergency Services Team perform a high crawl during a modified Marine Combat Physical Test at Joint Base Langley-Eustis, Va., April 28, 2017. The team provide services equal to a civilian police SWAT (Special Weapons and tactics) Team , to the installation and train to handle hostage and barricaded suspect situations. (U.S. Air Force photo/Senior Airman Derek Seifert)