PACIFIC OCEAN -- First Reconnaissance Battalion Marines rehearsed boat operations on rigid raider craft from the stern gate of USS Bonhomme Richard June 30 during the 11th Marine Expeditionary Unit’s first pre-deployment exercise at sea. The men are attached to Battalion Landing Team 2/4, the MEU’s ground combat element. The MEU and its Navy counterpart, Amphibious Squadron 7, are testing interoperability before a certification exercise later this summer.