staircase. do i want to be coming down a staircase if there's something bad that's happening? we had no choice. we all got out. everybody was somewhat calm, but they were nervous, because that thought is in the back of your mind. >> reporter: may i have your name? >> any name is nathan hutton. >> reporter: you're on the 29th floor? >> that was nathan hutton. he was in the building. he,ed out the stairwell like so many other people around 2:00 eastern today after that helicopter crash landed on the top of their building in the middle of midtown manhattan. this is just south of central park. we're getting new information from the manager of the faa communications. i want to parse through the different lines. and miles o'brien, our aviation analyst is on the phone with me. miles, they've now named the type of helicopter. it's an augusta a 109-e helicopter that crashed. can you tell me anything about the make and model?