Coast Guardsmen aboard U.S. Coast Guard Cutter Healy (WAGB 20) deploy an Autonomous Lagrangian Thermometric Observer (ALTO) buoy in support of science operations in the Arctic Ocean, Sep. 10, 2023. The ALTO is a subsurface drifting float which surfaces periodically to transmit oceanographic data via satellite. (U.S. Army photo by Sgt. Carter Acton)