Rear Adm. Kevin S. Cook and his wife, Kris Cook, are rendered honors by side boys as he walks down the aisle, officially relieved of the Coast Guard's Eighth District command and retiring from Coast Guard service after 36 years, Friday, May 15, 2015. Cook was relieved by Rear Adm. David R. Callahan as the district commander, a job that carries with it the responsibility of Coast Guard operations spanning 26 states, from the Gulf of Mexico coastline to the Canadian border and all inland waterways within. The change of command ceremony is a time-honored tradition which formally restates to the officers, enlisted, civilian and auxiliary members of the unit, the continuity and authority of command. (U.S. Coast Guard photograph by Petty Officer 2nd Class Seth Johnson)