Originally Posted by
EasternATC
Methinks they were many of the same airplanes. Pan Am got 'em when they bought up National, then a few years later started the "every hour on the half-hour" DCA-LGA shuttle, which DL eventually acquired.
Followed U.S.AIR out of ORD, said to them "I see you have ship 445."[445NE]. Their reply : "We'll get you for this."