My boss, as he so often does, passed along an incredible clip from YouTube. This one shows a HUGE radio controlled B-29 Superfortress with working detachable X-1 (the rocket plane which broke the sound barrier). Absolutely amazing, and worth all seven minutes and change.
[youtube https://www.youtube.com/watch?v=5RVxSn9P568&hl=en&w=580&h=485]
[youtube https://www.youtube.com/watch?v=5RVxSn9P568&hl=en&w=580&h=485]