7/3/2012 - U.S. Air Force Staff Sgt. Michael Roberts, 35th Maintenance Squadron precision measurement equipment laboratory technician, uses a Digimar CX-1 to program the linear measurement standard for a 90-degree angle at Misawa Air Base, Japan, July 3, 2012. The Digimar CX-1 is a height-measuring instrument PMEL technicians use to record and retain precise measurements of surfaces and grooves. (U.S. Air Force photo/Airman 1st Class Kenna Jackson/Released)

7/3/2012 - U.S. Air Force Staff Sgt. Kevin Shoultz, 35th Maintenance Squadron precision measurement equipment laboratory electrical standards element supervisor, calibrates, in a dark room, a night vision test set to make sure night vision goggles are operational at Misawa Air Base, Japan, July 3, 2012. The test conducts operational checks for equipment use by pilots and security forces Airmen during night operations. (U.S. Air Force photo/Airman 1st Class Kenna Jackson/Released)

7/3/2012 - U.S. Air Force Staff Sgt. Edward Malone, right, 35th Maintenance Squadron laboratory quality assurance evaluator, shows Airman 1st Class Robert Crowell, 35th Maintenance Squadron laboratory apprentice, how to use a torque and force calibrator at Misawa Air Base, Japan, July 3, 2012. The calibrator generates, controls, measures and displays the rotational force applied to torque measuring tools up to 20,000 foot-pounds. (U.S. Air Force photo/Airman 1st Class Kenna Jackson/Released)