CHICAGO (CBS)– Two people survived seven hours in Lake Michigan on Tuesday, after they were separated from their personal watercraft. The Coast Guard rescued the two survivors near Waukegan around 7 p.m. Tuesday night, hours after their personal watercraft was located. Coast Guard officials received a report around 4 p.m. of an unmanned personal watercraft that was located approximately three miles from Lake Forest Beach two hours earlier. According to the Coast Guard, two ce