Hans,
Based on this fine photo provided by Bell...
http://www.amics21.com/911/imags/ua155_g.jpg
I am certain a jet hit WTC2.
I am certain the jet has UA-type markings.
The jet is most likely a 767, or a jet that looks like a 767.
I suppose there could be other jet types - civilian or military - that look like a 767 - but I have not invested the time, nor do I have the expertise to comment on this at the moment. Perhaps others could.
I cannot tell if the jet is actually UA Flight 175.
I cannot tell if passengers, pilots, or hijackers are on board.
I cannot tell how the jet is controlled (hand-flown vs. not).
I cannot tell if the the jet's pitch, angle, etc., are features of being hand-flown, or precisely predetermined and controlled.
I cannot tell if the point of impact on WTC2 was an idiosyncratic feature of the jet being hand-flown, or if the point of impact was a precise, predetermined target.
I cannot tell if the jet was used to create a phreato-thermatic (aluminum-water) explosion.
I cannot tell if the fuselage piece found is indeed authentic.
I cannot tell if the landing gear found is indeed authentic.
I cannot tell if the DNA "evidence" is authentic.
I cannot tell what hit WTC1 from the photo.
Max
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