No, the police dogs weren’t on trial. :)
It was a contest of handler and police dog teams at Scottsdale Stadium recently. It was FREE and fun!
http://content.screencast.com/users/JohnWake/folders/Jing/media/c8c48bdf-db49-4622-840d-b9effeb5ccd1/jingh264player.swf
Video shot from my new Droid phone.