This picture was taken by fishermen that were tuna fishing on the rig at the time of the explosion.
They first smelled methane gas, as they fished right next to the oil rig. One crew member who had training in the oil industry recognized the danger, they dropped the fishing rods and hit the throttles. They offered to help with the emergency response but were warned to stay clear of the area.
Ken's Dock 
Shell had set the record just six hours before when it reported a 68 percent gain in earnings. Freshwater Fishing Rods Wholesale