Seaman Michael Keck, from Coast Guard Station San Francisco and the Coast Guard men's rubgy team, defends against an opposing rugby player during a sevens rugby match against at the Las Vegas Invitational, the largest rugby tournament in North America, March 1, 2018. More than 275 teams competed across 28 divisions over the annual multi-day event, which ran alongside the USA Sevens international rugby tournament. (U.S. Coast Guard photo by Petty Officer 1st Class Rob Simpson/released)