Chris Bahe, 12th Flying Training Wing T-38C Talon II crew chief, signs off on a line-per-line item sheet to finish a pre-flight walk-around inspection at Joint Base San Antonio-Randolph Nov. 8, 2016. Bahe has been a crew chief at JBSA-Randolph since 2007. (U.S. Air Force photo by Airman 1st Class Lauren Ely/Released)