On Fri, 22 May 2009 15:55:33 -0700, "Batrueman"
wrote:

These were a derivation of the Bear Bombers. Were they as noisy as the Bear
Bombers? (Super-sonic propeller tips?)
"Mitchell Holman" wrote in message
.130...


I just posted a video that mentions these to abma yesterday - for any
interested parties.

Waldo.