I hope they do not see they can make money off you for running.
Come on, Nutloose. This is an event open to the GENERAL PUBLIC. It's no different from the London Marathon. It gets people to a place where there are aeroplanes (remember them? Big things that fly). Family members and, once they finish, runners can go see what the RAF has done, and is still doing.
OK, I'll declare an interest. I'm a runner and also a Cosford volunteer.