Robot Event Staging/Rental

I am looking for a US-based company that stages events/does rentals of battle robots, like this one: Any leads would be appreciated.
Thank you,

i am in the uk, and when we wanted to organize something like this, i contacted the local vex branch (uk and europe - paul mcknight) and they gave me some contacts … if not look around for any companies with anything to do with robotics, because they always have contacts …

hope this helps