7/2/2012 - U.S. Air Force Staff Sgt. Douglas Brown, 35th Aircraft Maintenance Squadron resource advisor, looks through a boresight telescope on an F-16 trainer to make sure the M61A1 Vulcan cannon barrels are correctly aligned during a two-week basic flightline maintenance course at Misawa Air Base, Japan, July 2, 2012. As Brown watches the crosshairs of the scope, he instructs another Airman to move a collimator so the weapon alignment is accurate. (U.S. Air Force photo/Airman 1st Class Kia Atkins/Released)

7/2/2012 - U.S. Air Force Tech. Sgt. Jason Bouse, right, 372nd Training Squadron Detachment 23 F-16 weapons instructor, advises Senior Airman Chris Rodriquez, 35th Aircraft Maintenance Squadron aircraft armament systems, how to install an M61A1 Vulcan cannon on an F-16 trainer during a two-week basic flightline maintenance course at Misawa Air Base, Japan, July 2, 2012. The M61A1 fires standard M50 ammunition at 6,600 rounds per minute. (U.S. Air Force photo/Airman 1st Class Kia Atkins/Released)

7/2/2012 - U.S. Air Force Airman 1st Class Jonathan Elizondo, 35th Aircraft Maintenance Squadron aircraft armament systems, installs a boresight telescope onto an M61A1 Vulcan cannon on an F-16 trainer during a two-week basic flightline maintenance course at Misawa Air Base, Japan, July 2, 2012. The telescope is an instrument used to align the gun sights. (U.S. Air Force photo/Airman 1st Class Kia Atkins/Released)

7/2/2012 - U.S. Air Force Staff Sgt. Scott Parish, 35th Aircraft Maintenance Squadron weapons team chief, removes an M61A1 Vulcan cannon from an F-16 trainer during a two-week basic flightline maintenance course at Misawa Air Base, Japan, July 2, 2012. The course consists of weapons installation and removal, troubleshooting and functional checks. (U.S. Air Force photo/Airman 1st Class Kia Atkins/Released)