Fireman Cary Meyer, Fireman Arman Purganan, Petty Officer 1st Class Jesse Jarvis, and Petty Officer 1st Class Nick Ostrander deployed from Coast Guard Aids-to-Navigation Team San Francisco to Lake Tahoe to work aids, Sept. 9, 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)