Truth? Hardly.
"No trace of the one that allegedly hit the Pentagon has ever been found"
Really?
The fact that it struck the Pentagon ( as seen in the c.c. recording of said aircraft striking the Pentagon at 9:45 a m.) at around 580mph, flying through numerous support columns, this shredding the aluminum craft, with about 40,000 gallons of Jet-A fuel being instantly ignited into a conflagration burning at around 1800 degrees. Aluminum melts at 1221 degrees.
Stands to reason why very little was left of aircraft.