We looked inside some of the tweets by @Jeff_Piotrowski and here's what we found interesting.
Inside 100 Tweets
787 7th ave, #midtown NYC. We’re 1 block south. 20 mins ago there was a loud sound like a too-low #helicopter & I looked up and saw sheet of flame on roof and then smoke. News reports saying helicopter/small plane crash onto roof which would be consistent with what I heard/saw.