and above them four floors of rental apartments in harlem. this is a working-class neighborhood. buildings that are old and sandwiched between newer buildings. there have been teardowns of older buildings going on. teardowns and reconstruction of low, 4-5, story buildings. it isn't clear where the explosion was centered today. whether it is 1644, i believe on the left. and 1646 on the right. again, jenna mentioned reports of the smell of gas in the search at 1644 park avenue. and one of the buildings appears to be gone. 1646 appears to be virtually gone. 1644 pretty much as well. it is really tough to tell