[JFCjef]

See this:

http://uk.youtube.com/watch?v=xMiQScwL9oU

No exhaust flames visible. If you think about it exhausts would have been modified to make flames invisible at that time, by both sides, I would have thought. In your great vid, that plane flew in peace time therefore had no need to hide the exhaust flames.

regards J

Though in many Reports i have read from nightfighter pilots that spotted the enemy aircraft because of its small exaust flames.
Some Aircraft like the Mosquito FB MK VI have hidden exausts but it was still not possible to hide the flame 100 %

BTW that video you posted was recorded at daytime and Edited later on to give it a "Night" Effect.