The US Coast Guard change-of-command ceremony for its 9th District, which spans the five Great Lakes, the St. Lawrence Seaway, and parts of the surrounding states; & at the same time a retirement ceremony for its departing commander. Vice Adm. Robert Parker, Coast Guard Atlantic Area commander, presided over the ceremony to transfer command of the 9th District from Rear Adm. Michael Parks to Rear Adm. Fred Midgette. Parks assumed command of the 9th District in April 2010. Following the change-of-command ceremony…