Like, ya know, when that thing that makes you move, it has pistons and things, When your thingamajigy is providing power, you do not hear other peoples thingamajig when they are providing power. HiTech
hehhttp://www.youtube.com/watch?v=BWbzId0vQGM&feature=related
thats great, especially when the X-1 rocket fires not WWII, but this RAF C-17 is really impressive:http://www.youtube.com/watch?v=CFioDwbwcNQ