Testing the Icy Waters Coast Guard Petty Officer 1st Class Joshua Tangermann and Petty Officer 2nd Class Harrison Bauer lower themselves into the water while practicing ice rescue techniques in McMurdo Sound, Antarctica, Dec. 29, 2023. Operation Deep Freeze is one of many operations in the Indo-Pacific in which the U.S. military promotes security and stability across the region. SHARE: Download: Full Size (1.67 MB) Tags: Polar Star, ANTARCTICA, Coast Guard, deep freeze 23, McMurdo Sound Credit: Coast Guard Petty Officer 3rd Class Ryan Graves VIRIN: 231229-G-IC479-2004F.JPG Photo Gallery