Since when did the bases change? There is no crew base at JFK or any flying that originates at JFK.
DFW-EMJ, CRJ, SF340
LAX- EMJ, SF340
MIA- ATR
SJU- ATR
BOS- EMJ
ORD- EMJ, CRJ
LGA- EMJ
Also with the scope clause once divested AE will no longer be able to fly hub to hub which will mean the closure of BOS and or LGA.