Police Constable Garry Phillips and Explosive Search Dog Benson, both with the Ministry of Defence Police, search a vehicle for explosive devices during a training exercise at RAF Alconbury, England, March 17, 2015. The exercise paired and tested the response of local forces and Airmen from the 423rd Security Forces Squadron. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

Royal Air Force Senior Aircraftsman Technician Zac Herdman, with the 5131 Bomb Disposal Squadron at RAF Wittering, attaches an arm to a bomb disposal robot during a training exercise at RAF Alconbury, England, March 17, 2015. The exercise allowed UK and U.S. Armed Forces to partner and share best practices while responding to a simulated incident. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

A Royal Air Force 5131 Bomb Disposal Squadron robot moves toward a suspicious vehicle parked at the large vehicle inspection gate during a training exercise at RAF Alconbury, England, March 17, 2015. The robot, dispatched from RAF Wittering, is able to remotely respond to numerous hazardous situations, where it would be too dangerous to send an individual. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

A Royal Air Force 5131 Bomb Disposal Squadron robot makes its way toward a suspicious vehicle, parked at the RAF Alconbury, England large vehicle inspection gate, during a training exercise, March 17, 2015. Controlled by an operator hundreds of feet away, the robot can safely assess and interact with hazardous materials and situations. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

Royal Air Force Sergeant Mac McLachlan, with the 5131 Bomb Disposal Squadron at RAF Wittering, right, explains the functions and capabilities of a bomb disposal robot to U.S. Air Force Capt. Jesse Sandstrom, 423rd Security Forces Squadron operations officer, during a training exercise at RAF Alconbury, England, March 17, 2015. The exercise allowed U.S. and UK Service members to work together and properly manage and eliminate a threat to the installation. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

A Royal Air Force 5131 Bomb Disposal Squadron robot approaches a suspicious vehicle, parked at the RAF Alconbury, England, large vehicle inspection gate, during a training exercise, March 17, 2015. During the exercise, UK and U.S. Service members were able to work together to assess and successfully manage a simulated-hazardous situation. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

Royal Air Force Sergeant Mac McLachlan, with the 5131 Bomb Disposal Squadron, walks back from the RAF Alconbury, England, large vehicle inspection gate following a training exercise, March 17, 2015. McLachlan, who is based at RAF Wittering, responded to the simulated incident and assisted Airmen from the 423rd Security Force Squadron in their response. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

Royal Air Force Senior Aircraftsman Technician Zac Herdman, with the 5131 Bomb Disposal Squadron at RAF Wittering, rolls a wire back from the RAF Alconbury, England large vehicle inspection gate during a training exercise, March, 17, 2015. Both UK and U.S. Service members were able to implement hands-on training when responding to the simulated-hazardous incident. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

Royal Air Force Senior Aircraftsman Technician Zac Herdman, with the 5131 Bomb Disposal Squadron at RAF Wittering, recalls a bomb disposal robot following a training exercise at RAF Alconbury, England, March 17, 2015. In order to minimize the danger to individuals, a mobile command center remotely controlled the robot. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

Royal Air Force Senior Aircraftsman Technician Zac Herdman, with the 5131 Bomb Disposal Squadron at RAF Wittering, prepares a bomb disposal robot to be loaded into a mobile command center, following a training exercise at RAF Alconbury, England, March 17, 2015. During the exercise, Herdman guided the robot to respond to and engage with a simulated hazardous incident. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)