That is an interesting website, though I don't watch US airports so much.
Leaves me with a question about the TCAS altitudes which I referred to in the SFO topic.
TCAS doesn't work below 1000 feet, at 1100 feet it says adjust vertical speed and at 15oo feet it gives the resolution advisories.
What if the helicopter would be at 900 feet and AA at 1100 feet, would it then go off?