A Marine Raider with 1st Marine Raider Battalion, U.S. Marine Corps Forces, Special Operations Command, transitions out of the water during a simulated underwater assault force night-raid in Los Angeles, California, Sept. 3, 2015. Training like this is conducted to meet Special Operations Forces dive requirements, and to enhance the understanding, planning and operational considerations when working in a joint operational environment with both special operations and conventional Marine Corps forces. 1st Marine Raider Battalion is organized, trained and equipped to deploy for worldwide missions as directed by MARSOC in support of their regionally-aligned Theater Special Operations Command. (U.S. Marine Corps Photo by Sgt. Scott A. Achtemeier / Released)