Is this the statute?
Quote:
18 U.S.C. 1382 - U.S. Code - Unannotated Title 18. Crimes and Criminal Procedure 1382. Entering military, naval, or Coast Guard property
Whoever, within the jurisdiction of the United States, goes upon any military, naval, or Coast Guard reservation, post, fort, arsenal, yard, station, or installation, for any purpose prohibited by law or lawful regulation; or
Whoever reenters or is found within any such reservation, post, fort, arsenal, yard, station, or installation, after having been removed therefrom or ordered not to reenter by any officer or person in command or charge thereof--
Shall be fined under this title or imprisoned not more than six months, or both.
Because if it is, I don't see where notification has anything to do with it.
They entered the military installation for the purpose of entering the US illegally, which I'm quite sure is prohibited by law...
If I were to accidentally walk onto the installation, I wouldn't meet that criteria, because I'm here legally and wouldn't have trespassed for any purpose prohibited by law.