Gen. David L. Goldfein, U.S. Air Force chief of staff, gives the commencement address at the Air Force Institute of Technology graduation ceremony March 21, 2019, in the National Museum of the U.S. Air Force on Wright-Patterson Air Force Base, Ohio. Graduates earned a total of 214 Master of Science degrees and 20 Doctor of Philosophy degrees, which were presented during the ceremony. (U.S. Air Force photo by R.J. Oriez)