If you do it on start-up it'll be over far too quickly. A good performance depends on reaching that climax, so to speak. Set yourself up with 4 engines, rear-gunner, top-gunner, captain, co and bomb-aimer. If you can get them sat on bar stools so much the better. What makes it work is a good narrator, ie you, who can set the tone, create atmosphere for a reminiscent bombing trip somewhere over Europe (or even the odd dam or 2), and get the audience behind you. Make sure each engine starts in turn with single arms rotating wildly with plenty of noise, ensure pre-flight checks and as much banter for captain and co as possible. Then it's clearance, take-off and away you go. Whilst on mission a few fighters should run around the "aircraft" for some good gunner sport (you commentate throughout), make sure the bombs are away and then head for home. Unfortunately through fighter or AAA action an engine catches fire - this needs to be quenched as quickly as possible with any type of liquid or human-friendly fire extinguisher, and delivered by as many onlookers as possible. The choice of engine is entirely yours - and could be more than one. The aircraft may even have to ditch as a result of the fire ........ more liquid required!!! This is the version I've seen practised regularly, but I'm sure there are bigger and better ones still to come.