I'm flying in from LHR to PHL and connecting to St.Louis. (Probably from terminal F )
After clearing Immigration and customs,
1. Is there a Bag Drop for Connecting AA Flights after Customs
2. Do I need to clear Security Again (I assume Yes) - in Terminal A or Terminal F
3. I have 4 Hrs betw flights. Is there a AA lounge with Showers or a better lounge in Terminal A
4. Can I clear security in Terminal A and use air side connection buses to go to Terminal F before departure.