> In fact when your DNA is taken for the military database it is explicitly stated that it will not be used for criminal cases. If anyone managed to search the database, that would certainly get thrown out by a court.

I wouldn't be so sure. Evidence observed during the execution of a warrant against the incorrect property is still valid and admissable, for example. Not saying this kind of thing applies in this specific case but thought the idea worth mentioning.

Aren't there exceptions when there is a reasonable cause to suspect a member of the military?