I can remember so many near mid airs that I've had....with ATC seperation and screwups.
I have a feeling that ATC cleared the GA plane...and forgot to warn the 777...and that the GA was watching it all unfold...
it was a high wing, with better look down vis...and when you are that close to this beautiful airport, you look down and watch the planes takeoff.
and what's a STUFFUP?