Capt. Eric Aaby, commanding officer of Amphibious

Capt. Eric Aaby, commanding officer of Amphibious Construction Battalion (ACB) 1, explains to the Philippine Navy Special and Technical Staff and Naval Combat Engineering Brigade, Philippine Navy the Improved Navy Lighterage System causeway ferry on their visit during Exercise Pacific Horizon 2015. PH15 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. . (U.S. Navy photo by Mass Communication Specialist Seaman Eric Chan/Released)