Observed a near zenith pass of UARS tonight (Nov 30 2140 UT). It was mag 1-2 until at zenith then suddenly flashed to mag -2 or possibly -3. The brightening peaked and declined evenly over approx 4 seconds. Anyone else observe similar UARS activity? Have seen 4-5 passes of UARS and never seen this flashing. Steve Bolton Saint John, N.B. Canada