A Coast Guard HH-65 Dolphin helicopter flies overhead as the Coast Guard Cutter Resolute steams near Deepwater Horizon spill site, July 4, 2010.

The Resolute, home-ported in St.Petersburg, Fla., is serving as a search and rescue guard to help support and protect people and ships involved in the largest oil spill response in history.

U.S. Coast Guard photo by Petty Officer 1st Class Matthew Belson.