Coast Guard Aids-to-Navigation Team San Francisco member Fireman Cary Meyer transits aboard the 26-foot trailerable-aids-to-navigation boat to work ATON in Lake Tahoe, Sept. 10, 2019. The Coast Guard is responsible for ensuring signs, symbols, buoys, markers, lighthouses, and regulations are up to date and functioning properly so recreational and commercial boaters can safely navigate the maritime environment. (U.S. Coast Guard photo by Petty Officer 2nd Class Brandon Giles/Released)