An oil rig has exploded 80 miles off the coast of Louisiana. All 13 workers involved in the rig explosion are accounted for, but one person is injured. Could this be the beginning of more explosions to come?

WASHINGTON (AP) — President Barack Obama is offering condolences to relatives of the 11 workers who were killed when an oil rig exploded in the Gulf of Mexico, causing the worst environmental disaster in U.S. history.