U.S Marine Sgt. Eric Maehler holds security while conducting a raid during realistic urban training at Dodger Stadium in Los Angeles Dec. 8, 2014. Maehler is a team leader with the 15th Marine Expeditionary Unit’s Maritime Raid Force. RUT prepares the Marines of the 15th MEU for their upcoming deployment by enhancing their combat skills in environments they may encounter in future missions. (U.S. Marine Corps photo by Cpl. Anna Albrecht/Released) - U.S Marine Sgt. Eric Maehler holds security while conducting a raid during realistic urban training at Dodger Stadium in Los Angeles Dec. 8, 2014. Maehler is a team leader with the 15th Marine Expeditionary Unit’s Maritime Raid Force. RUT prepares the Marines of the 15th MEU for their upcoming deployment by enhancing their combat skills in environments they may encounter in future missions. (U.S. Marine Corps photo by Cpl. Anna Albrecht/Released)

U.S. Marines with the 15th Marine Expeditionary Unit’s Maritime Raid Force conduct a raid during realistic urban training aboard Camp San Luis Obispo, Calif., Dec. 5, 2014. RUT prepares the Marines of the 15th MEU for their upcoming deployment, enhancing their combat skills in environments similar to those they may find in future missions. (U.S. Marine Corps photo by Cpl. Anna Albrecht/Released) - U.S. Marines with the 15th Marine Expeditionary Unit’s Maritime Raid Force conduct a raid during realistic urban training aboard Camp San Luis Obispo, Calif., Dec. 5, 2014. RUT prepares the Marines of the 15th MEU for their upcoming deployment, enhancing their combat skills in environments similar to those they may find in future missions. (U.S. Marine Corps photo by Cpl. Anna Albrecht/Released)