A M113 armored personnel carrier (APC) on the Sea Girt Reef in 60' of water in the Atlantic Ocean off Sea Girt, New Jersey, USA. Each M113 had a crew of two, a commander and a driver, and could carry eleven men and their equipment. The driver sat on the L/H side of the vehicle, and had a good field of vision through four periscopes wich were mounted in the cupola. The commander was situated centrally in the vehicle and had a fully rotating cupola with five periscopes. The commander also acted as the gunner and operated the .50 cal machine gun, this could be rotated through a full 360 degrees to give an all-round field of fire if needed. The ammo for the 50 was stored in portable boxes behind the infantrymen's seats.