It's the ninth Annual Warbirds Over the Rockies event at Drake Field.

The unique air show kicks off Friday and runs through Sunday. Around 5,000 spectators are expected to attend. It's the largest event of its kind in the country.

A portion of the proceeds from the show will be donated to Mental Health America of Colorado.

For more information on Warbirds Over The Rockies go to http://www.warbirdsovertherockies.com/

To hear from model plane enthusiasts and what it's like to build and fly the planes, click on the attached video.

(KUSA-TV © 2012 Multimedia Holdings Corporation)