Possible Engine Firing to Avoid Debris; Landing Scheduled Today

Ground crews are trying to determine whether an orbital adjustment engine firing is needed to move space shuttle Discovery out of the path of a piece of orbital debris. If needed, the burn will be executed at 12:02 p.m. EDT.

Thursday's landing opportunities begin with a planned deorbit burn at 5:59 p.m. EDT and a daylight landing at 7:05 p.m. The next opportunity is one hour after sunset with the deorbit burn at 7:36 p.m. EDT and a landing at 8:42 p.m. EDT.