Andersen ocean safety
The yellow flag signals calm waters to swimmers July 18, 2013, at Tarague Beach on Andersen Air Force Base, Guam. Swimmers at Tarague are advised no lifeguards are present at the beach and should swim in buoyed areas to avoid hazardous conditions such as strong currents and waves. (U.S. Air Force photo by Airman 1st Class Mariah Haddenham/Released)