I heard a SONIC BOOM while walking to class at SIUE ... it was a perfectly clear day. I about jumped out of my skin. I looked up to see an airplane (I don't know what kind) in the distance sky. It was neat. It left a lot of people staring up in the air. georgie In a message dated 1/15/03 7:31:03 AM Pacific Standard Time, goshhawk@xxxxxxxxxxx writes: > There are two supersonic corridors in Missouri that allow the military > national guard and Boeing to test their aircraft. One is along the > Mississippi south of St Louis. Every F-15 and F/A -18 aircraft that is > built > in St Louis is checked out to about Mach 1.6 before delivery. As long as > they stay in the corridors, there are very few complaints. > >