Planning to quit, fighting to succeed: Airman earns Ranger Tab Air Force Staff Sgt. Robert Keefe, the 736th Security Forces Squadron noncommissioned officer in charge of training, graduated from the U.S. Army Ranger School on Oct. 16, 2015. Keefe was the 266th airman to persevere through the rigorous 61-day course. Air Force photo by Senior Airman Joshua Smoot SHARE: Download: Full Size (0.38 MB) Tags: air force, face of defense, airmen Credit: Senior Airman Joshua Smoot VIRIN: 160113-F-UA699-025.JPG Photo Gallery