They were roaring around all day making vapour trail arcs and curves in the sky and seemingly playing that children's playground game 'tigs', where you chase your opponent and he becomes 'it' when you touch him. Then he has to chase you.
Thankfully the F15s from the 48th Fighter Wing don't touch one another as they chase around their playground in the sky unless it's by laser or electronics.
We love to see them and hear the noise they make as they manoeuvre for advantage over one another, we just wish they'd come a little lower occasionally but they must have their designated high/low envelope to fly in, although it does make taking photographs a little frustrating.
You keep practising and we'll keep watching. Fantastic to see.