On 19 September 2008, at Lehigh Valley Airport, Allentown PA, at night, a CRJ-700 operated by Mesa Air Shuttle, with a valid take-off clearance, carried out a high speed rejected take off when a white navigation light was seen ahead on the runway. The runway was occupied by a previously landed Cessna 172 which, during the take-off roll of CRJ7, had advised the tower controller that it had œmissed its turnoff. An approximate 10 feet clearance between the two aircraft was reported.