the Blimps they used were from
Mobile Airships, a Canadian manufacturer of blimps for tradeshows and events.
All of their pricing is "on request".
watching the video in slow motion revealed that the upward and forward movement is controlled by a servo controller rotating the mounting for a pair of (linked) fans, the blimp is turned by another fan, mounted on the lower rear vane.
Doug.
Building Management Systems Engineer.