Our intrepid photographer and "man in the field" caught some action at a recent GSP trial in Colorado:

The competitors wait patiently. They've done this before; they know the drill.

Scanning the field ahead . . .

Game face on . . .

  
One of the the scouts brings the dog to the line while the handler mounts his horse.
You can see the dog on the right coiling up in anticipation of his first burst . . .

The judges give the go-ahead, whistles blow. They're released . . .

They're off . . .

And running! Game on.