A Coast Guard combination cover adorned with the master chief rank device sits on a podium after a change-of-watch and retirement ceremony were held for Master Chief Petty Officer Charles Lindsey, former command master chief of the Coast Guard 13th District, at Coast Guard Base Seattle, Dec. 18, 2015. The command master chief petty officer is the most senior enlisted Coast Guard member at a unit and acts as the primary liaison between commissioned officers and enlisted members. (U.S. Coast Guard photo by Petty Officer 3rd Class Amanda Norcross)