Tech. Sgt. Matthew Bingaman, a 386th Expeditionary Civil Engineer Squadron explosive ordnance disposal technician, returns from an improvised explosive device training scenario on Thursday, June 25, 2015, in Southwest Asia. (Brittany E. Jones/U.S. Air Force)

A 736th Security Forces Squadron paratrooper jumps from a MH-60 Sierra, assigned to Helicopter Sea Combat Squadron 25 on Friday, July 3, 2015, at Andersen Air Force Base, Guam. Airmen of the 736th SFS perform static line parachute operations quarterly to maintain proficiency. (Katrina M. Brisbin/U.S. Air Forc)

Fireworks explode behind a C-130 Hercules during Celebrate America on Thursday, July 2, 2015, at Yokota Air Base, Japan. (Delano Scott/U.S. Air Force)

Chief Master Sgt. of the Air Force James Cody addresses personnel at Osan Air Base, Republic of Korea, on Thursday, July 2, 2015. (Benjamin Sutton/U.S. Air Force)

A Latvian soldier teaches Staff Sgt. John Burgh and Staff Sgt. Jason Loscar how to weld at the Naujene Orphanage, Latvia, on Monday, June 29, 2015. Burgh and Loscar are members of the 171st Air Refueling Wing Engineer Squadron team working on a humanitarian civic assistance project in Latvia. (Allyson Manners/U.S. Air Force)

A pilot flying a F-15E Strike Eagle from Mountain Home Air Force Base, Idaho, looks over as a KC-135 Stratotaker from Fairchild AFB, Wash., prepares to refuel it during a mission on Thursday, June 25, 2015. (Veronica Montes/U.S. Air Force)

An aircrew assigned to the 153rd Airlift Wing, Wyoming Air National Guard drops a Container Delivery System bundle from a C-130H Hercules aircraft from about 5,000 feet above ground during Joint Precision Airdrop Delivery System training on Saturday, June 27, 2015, at the North Training Area, Camp Guernsey Joint Training Center, Wyo. (Charles Delano/U.S. Air National)