Defense Secretary Robert Gates this week nullified an Air Force decision to award a $35 billion refueling tanker contract to Northrop Grumman, opting instead to reopen the bidding. Gates' decision comes in the wake of a damning Government Accountability Office review that found the service botched several portions of the deal. "Following a review of the GAO decision on the initial award of this contract, I've concluded that the contract cannot be awarded at present because of significant issues pointed...