Joseph Lininger, Civilian Acculturation and Leadership Training student, guides his classmates using a radio as they maneuver through a Project X obstacle Feb. 2, 2016, at Maxwell Air Force Base, Alabama. Because he is blind, he was not able to physically participate in the obstacles. However, Lininger guided his classmates by playing the part of a commanding officer who is not physically with his unit. (U.S. Air Force photo by Airman 1st Class Alexa Culbert)