Staff Sgt. Steve Jervis, 363rd Training Squadron aircraft armament apprentice course instructor, watches as Airman Jarod Tracy, secures a retaining pin that holds the recoil cylinder on a 40 mm Bofors cannon. The Bofors is used by the AC-130u "Spooky" gunship for air to ground support. The recoil cylinder is responsible for ensuring a 7.8 inch recoil tolerance. Tracy and his classmates are scheduled to graduate on Oct. 17, 2017. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)
Airman Jarod Tracy, 363rd Training Squadron aircraft armament apprentice course student, secures a retaining pin that holds the recoil cylinder on a 40 mm Bofors cannon. The Bofors is used by the AC-130u "Spooky" gunship for air to ground support. The recoil cylinder is responsible for ensuring a 7.8 inch recoil tolerance. Tracy and his classmates are scheduled to graduate on Oct. 17, 2017. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)
Airman Jarod Tracy and Airman 1st Class Brandon Cantrell, 363rd Training Squadron aircraft armament apprentice course students, install a bracket that holds the recoil cylinder on a 40 mm Bofors cannon. The Bofors is used by the AC-130u "Spooky" gunship for air to ground support. The recoil cylinder is responsible for ensuring a 7.8 inch recoil tolerance. Tracy and his classmates are scheduled to graduate on Oct. 17, 2017. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)
Airman Jarod Tracy, 363rd Training Squadron aircraft armament apprentice course student, installs a bracket that holds the recoil cylinder on a 40 mm Bofors cannon 40 mm cannon is used by the AC-130u "Spooky" gunship for air to ground support. The recoil cylinder is responsible for ensuring a 7.8 inch recoil tolerance. Tracy and his classmates are scheduled to graduate on Oct. 17, 2017. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)
The Sheppard Air Force Base installation flag is flown at half-staff, Oct. 5, 2017, honoring the victims of the tragedy in Las Vegas. The White House, all public buildings and grounds, military posts and naval stations, and all naval vessels were ordered by President Donald Trump to fly the flag at half-staff until sunset, Oct. 6, 2017. (U.S. Air Force photo by Alan R. Quevy)
Airmen from the 363rd Training Squadron perform an open ranks inspection outside of their dormitory at Sheppard Air Force Base, Texas, Oct. 5, 2017. Airmen in this formation arrived this week from Basic Military Training at Lackland Air Force Base, Texas, to begin their technical training. (U.S. Air Force photo by Alan R. Quevy)
Tech Sgt. Nathan Jemar, 363rd Training Squadron military training leader, corrects an Airman during an open ranks inspection at Sheppard Air Force Base, Texas, Oct. 5, 2017. Open ranks inspections are used to ensure all Airmen meet dress and appearance standards in accordance with Air Force Instruction 36-2903. (U.S. Air Force photo by Alan R. Quevy)
Master Sgt. Timothy Covey, 364th Training Squadron instructor, listens intently as Brig. Gen. Ronald Jolly Sr., 82nd Training Wing commander, briefs Airmen on the importance of first sergeants at Sheppard Air Force Base, Texas, Oct. 6, 2017. Potential first sergeants attended a week-long seminar to learn more about best practices throughout the first sergeant community. (U.S. Air Force photo by Alan R. Quevy)
Airman 1st Class Maureen Mitchel, 363rd Training Squadron student, prepares installation of a pylon to an A-10 Thunderbolt ll at Sheppard Air Force Base, Texas, Oct. 6, 2017. Mitchel is in block 8 of 13 of the A-10 armament apprentice course. (U.S. Air Force photo by Alan R. Quevy)
Airman 1st Class Jacob Wedemeyer, 363rd Training Squadron student, assists a classmate during the installation of a pylon to an A-10 Thunderbolt ll at Sheppard Air Force Base, Texas, Oct. 6, 2017. Wedemeyer is in block 8 of 13 of the A-10 armament apprentice course. (U.S. Air Force photo by Alan R. Quevy)
Tech Sgt. Ryan Castle, 363rd Training Squadron instructor, prepares students to perform maintenance on air to ground missiles at Sheppard Air Force Base, Texas, Oct. 6, 2017. These students are in block 13 of 13 of the A-10 armament apprentice course. (U.S. Air Force photo by Alan R. Quevy)
Tech Sgt. Ryan Castle, 363rd Training Squadron instructor, demonstrates munitions preparation on an air to ground missile at Sheppard Air Force Base, Texas, Oct. 6, 2017. These students are in block 13 of 13 of the A-10 armament apprentice course. (U.S. Air Force photo by Alan R. Quevy)