Saturday will mark 60 days since the explosion and sinking of the Deepwater Horizon and beginning of one of the worst oil spills in history. On Friday, signaling a shift in strategy to fight against the ruptured well in the Gulf, the Coast Guard began ramping up efforts to capture oil closer to shore. Adm. Thad Allen said an estimated 2,000 private boats in the so-called "vessels of opportunity" program will be more closely linked through a tighter command and control structure to direct them to locations less than 50 miles offshore to skim the oil. Allen, the point man for the federal response to the spill, previously had said surface containment efforts would be concentrated much farther offshore. Estimates of the oil being siphoned from the well a mile below the Gulf are growing. Allen said more than 1.2 million gallons was sucked up to containment vessels Thursday.