Lol at OP's necro bump. It's a great idea, glad to see fan fiction already popping up. Haven't had time to read over all parts yet but hopefully there's a custom sparrow in there somewhere: Stealth Sparrow: -Moves slightly slower than other sparrows but has very little engine noise. -Has a cloaking device with limited use(reasons for limited use could be, makes engine louder if used too long/causes engine to overheat/etc.) -Also has a limited use boost to help you get clear, boost causes engine to make noise for set amount of time even after boost expires while engine gets back into normal parameters. Fan fiction like this, if nothing else, will hopefully give the developers inspiration for their own ideas.