U.S. Coast Guard Petty Officer 2nd Class Jared Vannoy (right) and Justin Burnett, an Arctic Mobile Observing System research engineer, pull a Seaglider Undersea Vehicle aboard a Coast Guard Cutter Healy (WAGB 20) small boat while operating in the Arctic Ocean, Aug. 5, 2025. The dense batteries in the seaglider are mounted on a rail to allow adjustments to its center of gravity, creating the ability to steer. (U.S. Coast Guard courtesy photo by Petty Officer 2nd Class Zack Ledoux)