Marines update annual aquatic training Published Aug. 7, 2012 By Senior Airman Jack Sanders 99th Air Base Wing Public Affairs NELLIS AIR FORCE BASE, Nev. -- Marines from the 6th Motor Battalion, a Marine Reserve Battalion participate in their annual aquatic training, Aug. 4, 2012 at the Nellis Fitness Center.The annual training was held at the Nellis Fitness Center pool because it allows the Marines to fulfill all their training requirements in a safe environment.