[img]http://d.yimg.com/a/p/ap/20100715/capt.7dc0b961cdad4f1fbdb713d1caa75f28-7dc0b961cdad4f1fbdb713d1caa75f28-0.jpg?x=130&y=86&q=85&sig=jeSYXxKnoB50nxxjn3XEbg--[/img]AP - BP allayed last-minute government fears of making the disaster worse and began testing the new, tighter-fitting cap Wednesday that could finally choke off the oil leak in the Gulf of Mexico.