The U.S. has just announced that the airspace is being shut down over Lake Michigan for “national defense” reasons.

This follows the shutting down airspace temporarily over Montana last night after a reported “object” or anomaly was spotted over the area. They said they were going to continue to monitor. This is maybe an indication that they’ve now picked the object up again further along its path into the U.S. or it may be another one.

There are unconfirmed reports of fighter jets being scrambled, but that would be logical given the situation.