U.S. Marine Corps Lance Cpl. Hunter Thompson, a Civilian Marine Corps Police Academy student, fights off the "red man" after receiving a Oleoresin Capsicum spray to his forehead and eyes during an OC spray training exercise aboard Marine Corps Air Station Miramar, San Diego, Calif., April 2, 2012. OC spray is a non-lethal eye irritant that is incorporated into CMCPA training to increase the students' knowledge and awareness of the OC spray's effect on an individual.