You cannot make it clear to him.

The reason is that he believes the statement that the individual is a retired military veteran.

If the man is a retired military veteran (and this is by no means a certainty), he might warrant reduced screening.

However, there is no possibility for the TSA to determine if this individual is truly a retired military service person or is a terrorist dressing in similar garb.

Husky doesn't realize this fact and he will continue to argue in favor of reduced screening for the military because of it.