Pfc. Ryan Parker, a San Matel, Calif. native (closest), and Cpl. Liam Lamarine, from Goffstown, N.H., hold landing zone security down an avenue of approach while their fellow Marines scramble toward a military operations in urban terrain town to conduct a raid in search of a high value individual believed to be an enemy battalion commander as part of Exercise Lava Viper at Pohakuloa Training Area, Island of Hawaii, July 18, 2013. The medium machine gunners are with weapons platoon, Echo Company, 2nd Battalion, 3rd Marine Regiment. (U.S. Marine Corps photo by Cpl. Matthew Callahan) - Pfc. Ryan Parker, a San Matel, Calif. native (closest), and Cpl. Liam Lamarine, from Goffstown, N.H., hold landing zone security down an avenue of approach while their fellow Marines scramble toward a military operations in urban terrain town to conduct a raid in search of a high value individual believed to be an enemy battalion commander as part of Exercise Lava Viper at Pohakuloa Training Area, Island of Hawaii, July 18, 2013. The medium machine gunners are with weapons platoon, Echo Company, 2nd Battalion, 3rd Marine Regiment. (U.S. Marine Corps photo by Cpl. Matthew Callahan)