Operation Lethal Eagle, a 21-day rigorous training exercise, is designed to train individual and collective lethality, prototype Army initiatives, and build mastery of large-scale, long-range air assault capabilities throughout the 101st Airborne Division (Air Assault). While most of the exercise leverages the world class training infrastructure at Fort Campbell, some units and Soldiers will operate out of Fort Knox, KY, and Camp Atterbury, IN.