[M Kehoe]

According to the project manager, Mr. DeMartini all those buildings were designed to withstand major impacts.....including jetliners and I'm sure falling debris.

I'll give you the benefit of the doubt. Yes, to the jetliner question...a DC8, not a 767.

5.56mm

[american spirit]

Maybe......but from the picture I saw the WTC7 did not seem inordinately damaged.