Respect Between Enemies:
http://www.fanfiction.net/s/2712528/1/
It is a perimeter fic, where the protagonists are OCs and the CCs are whispers in the wind (or in this case, figures hidden by their Mobile Weapons). There is not a lot of action, but when there is it is good. It seems mainly romance, but a... mature kind based on mutual understanding, not the sappy stuff that most fics seem to have.
Bah, explanations are no good. Read it yourself and enjoy.