The U.S. Coast Guard Cutter Polar Star (WAGB 10) undergoes the fourth phase of a five-year Service Life Extension Project at the Mare Island Dry Dock, LLC. in Vallejo, California, June 23, 2024. The work completed was part of the in-service vessel sustainment program with the goal of recapitalizing targeted systems, including propulsion, communication, and machinery control systems, as well as effecting significant maintenance to extend the cutter’s service life. U.S. Coast Guard photo by Cdr. Jeremy Courtade.