**FILE** Gerald Grinstein, CEO of Delta Air Lines, listens to the CFO of Delta, Ed Bastian, not pictured, speak to the media after exiting bankruptcy court in New York, in this April 25, 2007 file photo. Three-and-a-half years after taking over the reins of Delta Air Lines Inc., Gerald Grinstein bid farewell as chief executive Friday, Aug. 31, 2007 by reminding employees of their efforts to keep the carrier in control of its own destiny. (AP Photo/Seth Wenig, file)