Since they're flying first class, they get some kind of priority security, but I don't see on the AA website if it's specifically Pre Check. When my wife and I flew first on Delta in December, we went through Pre Check. They can go to the TSA website to see what is okay to take.
I don't think I'll get them lounge passes--I think it would be safer if they just wait at the gate.
Thanks for all the great tips!