[BraveMan]

Given the construction of the Pentagon itself, it doesn't surprise me that there was little aircraft to be seen . . .

September 11, 2001- Night photo of the Pentagon before
the debris from the collapsed section was removed.

Click on the thumbnail to view a larger picture . . .

More photos may be seen at http://renovation.pentagon.mil/projects-PHOENIX.htm

[BraveMan]

(Almost) Totally off-topic bump . . .

If you want your PC's clock to more accurate than your average Pentagon Security Camera Timestamp, you should check out the NIST Internet Time Service.