SEATTLE – Rear Adm. David G. Throop addresses guests after assuming command of the 13th Coast Guard District during a change-of-command ceremony held at Coast Guard Base Seattle, May 4, 2017. The change-of-command ceremony is a historic Coast Guard and Naval tradition, which has remained unchanged for centuries and includes the reading of the command orders in the presence of all unit crewmembers. U.S. Coast Guard photo by Petty Officer 2nd Class Ali Flockerzi.