That's why anyone with serious destructive intent will:
- buy an ADF uniform or 'role appropriate' kit from a disposal store
- forge an ADF ID (probably unnecessary, as most security people at a civvie aerodromes will not know what a real ADF ID looks like anyway), and
- put on a serious "I'm crew on that Herc" face.
That's assuming they could be bothered, instead of flying in from somewhere else or driving a truck through the fence....