Maj. Gen. (Ret.) Richard Platt presents Col. “BJ” Marshall with her Air Force Certificate of Retirement during her ceremony March 20. When Marshall, previously Director of Installations and Mission Support for Continental U.S. NORAD Region-1st AF (Air Forces Northern), received her commission in the U.S. Air Force in 1990, Platt presided over her ceremony. (U.S. Air Force photo by Airman 1st Class Sergio Gamboa/Released)