Coast Guard divers prepare for a dive at the National Science Foundation’s McMurdo Station ice pier in Antarctica Jan. 19, 2016. The dive team deployed with the Coast Guard Cutter Polar Star for Operation Deep Freeze 2016, the U.S. military’s logistical support of the NSF’s U.S. Antarctic Program. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)