Malmstrom Clinic Then-Air Force Senior Airman Kaitlyn Callahan, 341st Medical Operations Squadron physical medicine technician, poses for a photo in the clinic at the Malmstrom Air Force Base, Montana, clinic, July 12, 2017. Now a staff sergeant Callahan was selected as one of the Air Force’s 12 Outstanding Airmen of the Year for 2017. Air Force photo SHARE: Download: Full Size (0.72 MB) Tags: Malmstrom Air Force Base Credit: Air Force photo VIRIN: 170712-F-XA056-0066A.JPG Photo Gallery