The Naval Service training command “will continue to monitor the situation and consult with medical experts to decide when it is appropriate to resume guest attendance at graduation ceremonies."
Other schools in North Chicago remain open, according to the post.
The station posted on Facebook that all gates are closed and personnel are ordered to take cover.
A North Chicago man was charged after police found guns and drugs during a raid of his home in the northern suburb.
A special program for military veterans uses Mother Nature to heal the wounds of war.
A tornado warning issued for several northern suburbs in Cook, Lake and McHenry counties has expired.