Coast Guard Capt. Gregory Stanclik relieved Capt. Michael Davanzo as commanding officer of the Coast Guard Cutter Polar Star VALLEJO, Calif. — Command of the U.S. Coast Guard Cutter Polar Star changed hands June 15, 2018 during a change-of-command ceremony at the Mare Island Museum in Vallejo. Coast Guard Capt. Gregory Stanclik relieved Capt. Michael Davanzo as commanding officer of the Coast Guard...