The U.S. Coast Guard said it's monitoring salvage efforts on the 900-foot container ship MSC Idil after an explosion that occurred on Friday. The ship was about 60 miles north of Puerto Rico, in transit to Barcelona, Spain when the explosion happened. The Coast Guard said it has not been on the ship, but was told the likely cause involved welding. The Coast Guard cutter Key Largo is on scene with the MSC Idil ready to provide any rescue assistance, while monitoring th...