A key lawmaker yesterday said he was surprised to learn that two senior Air Force officials overseeing the service's aerial refueling tanker program were absent at a May Government Accountability Office hearing examining the legality of a high-stakes contract award to Northrop Grumman. Neil Abercrombie (D-HI) brought up the issue during a July 10 hearing of the House air and land forces subcommittee, which he chairs. At the end of a session with two GAO witnesses, he asked GAO Deputy...