I suspect a rather broad spectrum of fanfic readers look in on this LJ from time to time, so I appeal you all: Help Me, Flist; You're My Only Hope (outside of google or AO3, which can take up the better part of a weekend for this sort of thing.)
I'm caught up on my Who viewing through Angels Take Manhattan
( cut for minor, jingoistic spoiler )and need to roll that truck back to Power of Three, where U.N.I.T. is re-introduced. U.N.I.T. is meant to protect us from as much alien incursion as we can handle without the Doctor, right? To the best of y'all's knowledge, is there now or has there ever been a fan fictional encounter where the missions of U.N.I.T. and Stargate Command have been organized so as not to step all over each other?