Capt. Keith Ropella, commanding officer Coast Guard Cutter Polar Star (WAGB 10), presents an advancement certificate to Senior Chief Petty Officer Matthew Pollio, an information systems technician on Coast Guard Cutter Polar Star (WAGB 10), in Antarctica, Jan. 2, 2023. The Coast Guard Cutter Polar Star conducted an advancement ceremony during ice liberty in the McMurdo Sound. (U.S. Coast Guard photo by Petty Officer 3rd Class Aidan Cooney)