U.S. Marines assigned to Marine Air Control Group 48, look over radar to see if the simulated aircraft is hostile or friendly during Marine Air Command and Control System Integrated Simulated Training Exercise (MISTEX) aboard Marine Air Control Group-48 Center of Excellence, Great Lakes, Ill., July 21, 2013. This is the second consecutive year the MISTEX has been conducted. The MISTEX is designed to train the 4th Marine Aircraft Wing Tactical Air Command Center Battle Staff and increase Marine Air Command and Control System combat proficiency to be certified as capable to augment the active duty component. (U.S. Marine photo by Lance Cpl. Bethany Barnoski/MARFORRES Combat Camera/Released)