The fast runs and runs are done by Ex RAF pilots who used to operate them in Service, they are far from cowboys with toys and they all take things very very seriously. As for anyone getting in one and stealing it, the place is like Fort Knox with dog patrols etc as it doubles as a car storage facility for major manufacturers new stock and were talking the higher end, even the police use it for storage. A lot of the aircraft when sold were demilitarised with wiring looms etc cut