Yes lots of flows. And recalls. Mostly recalls now through the middle of the year I believe. Remember AA still had >1,000 on the street at the time of the merger.
DL and UA are expanding their flying too, we're down about 30 aircraft IIRC this year alone (S80's and 76's I think). That is also impacting hiring. That being said, at least on the US side, reserves are working their tails off.