RE: D-4 Championships
The D4 Championship probably had more Contras than at any contest in history. There were a total of five planes with Contra Drives. Here are some pictures:
The pilots from left to right are:
Bill Ahrens (f3a D5)
Mike Gaishin (Intermediate D4)
Brenner Sharp (Masters D4)
Dave Snow (f3a D5)
Bobby Satalino (Masters D5)