MARRERO, La. - Crews load an additional 400 feet of boom to a response vessel at the site the sunken towing vessel Altro Donna, April 6, 2012. The Altro Donna reportedly had a tank onboard with an estimated 11,500 gallons of diesel fuel and 52 gallons of lube oil when it allided with a piling and sank earlier that morning. U.S. Coast Guard photo by Petty Officer 2nd Class Elizabeth H. Bordelon.