Fencer the plan was never ever ever to fly 51 airplanes on Saturday. Here's the event schedule right from their website:
http://www.gml2007.com/eschedule.aspSaturday - September 29thGates open: 8:00 a.m.
Various AM Photo/Formation Missions
Opening Ceremonies: 9:30 a.m.
Scheduled flying activities began directly after*
• John Klatt (Air National Guard)
• John Mohr
• Red Barons
• Ed Hamill (Air Force Reserve)
• T6 Solo Demo
• AeroShell Team
• Patty Wagstaff
• Lee Lauderback (P-51 Solo)
• Horsemen Routine
• Michael Goulian
• USAF Heritage Flight(s)
• F-16 Viper Demo
• F-15 Eagle Demo
• F-22 Raptor Demo
• USAF Thunderbirds
•
The # “51” Flight Formation• Pyro Technical Display
• Various other Formations / Performances
And for Sunday...
Sunday - September 30thGates open: 8:00 a.m.
Various AM Photo/Formation Missions
Opening Ceremonies: 9:30 a.m.
Scheduled flying activities began directly after*
• John Klatt (Air National Guard)
• John Mohr
• Red Barons
• Ed Hamill (Air Force Reserve)
• T6 Solo Demo
• AeroShell Team
• Patty Wagstaff
• Lee Lauderback (P-51 Solo)
• Horsemen Routine
• Michael Goulian
• USAF Heritage Flight(s)
• F-16 Viper Demo
• F-15 Eagle Demo
• F-22 Raptor Demo
• USAF Thunderbirds
• Pyro Technical Display
•
Flight of 51 P-51s Formation• Various other Formations / Performances
I was there on Saturday and heard the same announcements you did. Knowing the schedule I never got my hopes up for something that wasn't promised. The closest thing I ever heard was they hoped to get 51 airplanes into the air which was made concurrently with the announcment to have people get the heck out of the way when they're tugging the airplanes around to the ready area. Also having 20 Mustangs taxiing past the crowd and up to the runway was a pretty good indicator that they were going to be flying only 20 airplanes on Saturday which for months now has been the plan. I can't feel sorry for anyone disappointed for the an airshow going as planned.