Midair collision between a biplane and a large-scale radio-controlled model

What happens in this video ?

Midair collision between a biplane and a large-scale radio-controlled model. The mishap occurred at an airport in Brighton, Colorado, USA. The RC pilots were using an airport runway for their activities, and the model involved in the collision was hovering on prop thrust when the biplane made a low-level pass over the field, then struck the model. The RC plane was destroyed, and the biplane has received minor damages.

Comment

Mike
Brussels

(Belgium)
This is no minor incident. At my local hang gliding site a pilot was killed in a collision with a model airplane.
17th May, 2011