RARE RAINBOW A U.S. Navy sailor stationed at Naval Air Station Key West spots a rare rainbow halo in the skies over the air station, Key West, Fla., April 29, 2008. The halo, which typically indicates rain, is a ring of colored or white light that encircles the sun when seen through a cloud of ice crystals. SHARE IMAGE: Download Image: Full Size (0.04 MB) Photo By: VIRIN: 422288-Q-FIL15-711.jpg Photo Gallery