Jabula Dog Academy - Stage 4

[clcw2]

What is being held in the handler's hand? It looks like there's a strap attached to it, but I can't tell exactly what it is. I'm wondering if it's a remote control for a shock collar, as most of these dogs are stress panting and look worried. This is very disappointing.

And why would you ever put two dogs on a piece of agility equipment at the same time? This is meant to be trick training, not agility, correct?