Comment: However,

In reply to comment: The 270 degree descending turn is evidence of visual approach. (see in situ)

However,

Submitted by Mohusk on Sat, 12/08/2012 - 00:57. Permalink

If the target was the other side of the Pentagon, then the u-turn would be necessary. Plus, you are looking at a supposed black-box simulation released by government sources.

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"In the beginning of a change the patriot is a scarce man, and brave, and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot."--Mark Twain