AA79 LHR-DFW 19 August.
Wow, LHR was a madhouse. I'm never flying the 3rd Sunday in August ever again. Clearly everyone cashing out their final vacation day before schools starts.
T4 only J1, and 14 on the UG list. I was #3 after a couple traveling together. Got to my seat in 18J and #1 cleared. Started to settle in when EF sent me a push notification that 18J was available.
Opened the AA app and saw I was now 10A.

I guess 10A missed his flight, and I enjoyed his pre-ordered chicken.