The Air Raid isn't magic, and it can't be 'figured out' or shut down as a scheme. It's a scheme like any other. It is designed to exploit mismatches, find open space, and improve execution. The last of those is the real key and where I think Leach gets it more than most. He simplifies so that his players can master it rather than trying to beat people with any brilliant play calls.

Still, like any other scheme, it is more difficult when you have less talent or when the opponent has more. Like any other scheme, it becomes more difficult in tighter space. And like any other scheme, certain defenses are better than others.