Rear Adm. David R. Callahan, commander, Coast Guard Eighth District, delivers a speech to the audience at the Coast Guard's Eighth District Change of Command, Friday, May 15, 2015. Rear Adm. Kevin S. Cook was relieved by 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)