Joint Base Andrews security forces Airmen begin a timed 1.5 mile run on JBA, Md., July 23, 2018. The defenders are competing for the opportunity to represent the Air Force District of Washington in the Defender Challenge 2018 at Camp Bullis, San Antonio, Texas. The challenge will give the Air Force and partnering allies such as the Royal Air Force, the German Luftwaffe, the Royal Australian Air Force and the Royal Canadian Air Force a way to showcase their military police capabilities and joint interoperability. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Staff Sgt. Krysten Bonillas, 811th Security Forces Squadron executive aircraft NCO, carries a five gallon jug of water during a security forces defender competition on Joint Base Andrews, Md., July 23, 2018. Bonillas, along with other JBA defenders, competed for the right to represent the Air Force District of Washington at the Defender Challenge 2018 at Camp Bullis, San Antonio, Texas. This will be the first time the competition will be held since 2003. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Senior Airman Nick Lodge, 811th Security Forces Squadron response force member, performs pushups as part of a security forces defender competition on Joint Base Andrews, Md., July 23, 2018. The defenders were competing to represent the Air Force District of Washington in the Defender Challenge 2018 at Camp Bullis, San Antonio, Texas. The defender’s challenge will give the Air Force and partnering allies such as the Royal Air Force, the German Luftwaffe, the Royal Australian Air Force and the Royal Canadian Air Force a way to showcase their military police capabilities and joint interoperability. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Joint Base Andrews security forces Airmen perform situps as part of a security forces defender competition on JBA, Md., July 23, 2018. The defenders competed for a spot on the four-man team chosen to represent the Air Force District of Washington in the Defender Challenge 2018 at Camp Bullis, San Antonio, Texas. The challenge will focus on the capability, lethality and readiness of each team. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Senior Airman Justin Tapia, 11th Security Forces Squadron response force member, pushes through a situp during a security forces defender competition on Joint Base Andrews, Md., July 23, 2018. Tapia, along with other defenders, fought to get one of the four positions on the team going to Camp Bullis, San Antonio, Texas, to represent the Air Force District of Washington in the Defender Challenge 2018. It is the first time the competition will be held since 2003. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Senior Airman Benjamin Oviedo, 811th Security Forces Squadron executive aircraft security team member, disassembles a M240B machine gun as part of a security forces defender competition on Joint Base Andrews, Md., July 23, 2018. Oviedo, along with other defenders, performed drills, exercises and displayed weapon knowledge to secure one of four positions on the team selected to represent the Air Force District of Washington in the Defender Challenge 2018 at Camp Bullis, San Antonio, Texas. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Senior Airman Nick Lodge, 811th Security Forces Squadron response force member, completes a ruck march as part of a security forces defender competition on Joint Base Andrews, Md., July 23, 2018. Lodge, along with other defenders, fought to get one of the four positions on the team going to Camp Bullis, San Antonio, Texas, to represent Air Force District of Washington in the Defender Challenge 2018. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Senior Airman Nick Lodge, 811th Security Forces Squadron response force member, performs a pullup as part of a security forces defender competition on Joint Base Andrews, Md., July 23, 2018. Lodge, along with other defenders, fought for one of the four positions on the team going to Camp Bullis, San Antonio, Texas, to represent the Air Force District of Washington in the Defender Challenge 2018. The challenge will give the Air Force and partnering allies such as the Royal Air Force, the German Luftwaffe, the Royal Australian Air Force and the Royal Canadian Air Force a way to showcase their military police capabilities and joint interoperability. It is the first time the competition will be held since 2003. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

A line of rucksacks and dummy M4s are positioned for Airmen to use during the rucksack march portion of the security forces defender competition on Joint Base Andrews, Md., July 23, 2018. The defenders competed to represent the Air Force District of Washington in the Defender Challenge 2018 at Camp Bullis, San Antonio, Texas. The challenge will focus on the capability, lethality and readiness of each team. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy