Petty Officer 3rd Class Luis Dueno Diaz, a crewmember aboard U.S. Coast Guard Polar Star (WAGB 10), changes out a lighting ballast while the cutter transits McMurdo Sound during Operation Deep Freeze, Feb. 7, 2025. Operation Deep Freeze works closely with other Antarctic programs to include those of New Zealand, Australia and Italy, as well as their respective defense forces. (U.S. Coast Guard photo by Petty Officer 2nd Class Briana Carter)