While at sea, a quadcopter fitted with a camera captures aerial shots of USNS Williams (T-AK-3009) and Improved Navy Lighterage System Causeway Ferry 36 transporting humanitarian assistance and disaster relief equipment and supplies of the coast of Marine Corps Base Camp Pendleton, Calif., as part of exercise Pacific Horizon 2015, Oct. 21. Pacific Horizon is a scenario-driven, simulation supported crisis response exercise designed to improve 1st Marine Expeditionary Brigade's and Expeditionary Strike Group 3's interoperability and strengthen Navy-Marine Corps relationships by conducting an in-stream Maritime Prepositioning Force offload of equipment, by providing host country civil-military security assistance, and by conducting infrastructure restoration support.