From ABC News:
DON DAHLER reporting:
I'm about four or five blocks just north of the World Trade Center. And at about 10--I would say 10 minutes ago, 15 minutes ago, there was a loud sound that I can only describe it--it sounded like a missile, not an airplane. Then there was a loud explosion and immediately lots of screaming out on the streets. And I don't want to cause any speculation, but that's the only way I could describe the sound. And it was definitely not the sound of a prop plane or anything like that.
SAWYER: And am I right? Are you a pilot?
DAHLER: Well, I have flown. I do not have a pilot's license, but I--I grew up on military bases. and I know the sounds of jets. And--and I've been in war zones and--and heard those kinds of different sounds. So, again, not to cause any kind of undue speculation but the sound itself was not of a prop plane. It was perhaps a jet. But it could have been a missile as well.
GIBSON: Can you give me--was it--was it a whining sound, Don, or what?
DAHLER: Yes. It was--it was a--how to describe it. It was a high pitch, but it had a--a--a whooshing sound. Not--not like a prop plane.
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