I don’t think Turkey will fire on the US. They (many besides Erdooo) know what we are capable of.
Not sure how it is going to play out, but suspect the Kurds and their allies will make a move to liberate Efrin (Afrin) from ISIS and al Qaeda. (Turkey’s Jihadi forces, FSA)
If we prevent Turkish jets from stopping them, Kurds will mop up the jihadi’s and retake that portion of Syria.
I seem to recall reading reports that during the attempted coup there was concern about the safety of our troops and the possible presence of nukes at Incirlik air base. I don’t consider Turkey to be an ally. We would be better off with our forces out and them out of NATO.