Cody Morris, Explosive Countermeasures International explosives canine handler, walks Orion, explosives detection dog, to a detection training site at Fort Eustis, Va., Aug. 31, 2015. The canines and handlers went through several detection sites where they were trained to find simulated explosive threats during a week-long certification course. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

U.S. Army Spc. Brandon Ward, 3rd Military Police Detachment explosives canine handler, hides a mock explosive during a week-long explosive detection certification course at Fort Eustis, Va., Aug. 31, 2015. The course aimed to ensure contracted explosives detection canines and handlers met military standards. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

Cody Morris, Explosive Countermeasures International explosives canine handler, directs Orion, explosives detection dog, as he searches for mock explosives at Fort Eustis, Va., Aug. 31, 2015. After detecting threats, canines are trained to sit, signaling a located threat. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

A mock explosive rests in a tire rim during a week-long explosive detection certification course at Fort Eustis, Va., Aug. 31, 2015. Canines and handlers participated in several detection courses throughout the week to gain certification for military operations. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

Quinton Stafford, Aegis explosives canine handler, walks Tor, explosives detection dog, through a detection course as part of a week-long explosive detection certification course at Fort Eustis, Va., Aug. 31, 2015. The 3rd Military Police Detachment hosted the course to ensure the contracted handlers and canines met military detection standards. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

Quinton Stafford, Aegis explosives canine handler, walks Tor, explosives detection dog, through a detection course as part of a week-long explosive detection certification course at Fort Eustis, Va., Aug. 31, 2015. The 3rd Military Police Detachment hosted the course to ensure the contracted handlers and canines met military detection standards. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

Orion, explosives detection dog, rests after completing the first explosives detection certification course at Fort Eustis, Va., Aug. 31, 2015. The annual course allows for contracted agencies to provide standardized and certified services for military operations worldwide. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)