I found this video after reading a fic at ff.net and you guys seriously have to watch it. I warn you though, it's angsty, so be prepared. It's definitely worth watching though. It's not so much a SS vid, as I don't know if we'll find out about them being a couple or anything, but it's SKY and that's what's important. LOL
It's video is by wildwingduck (aka Giannola), and it's titled: Soul Survivor
Here's her summary of it: While on a training course, Sky and his teammates become separated and taken out. He just barely escapes with his life, but taking with him the guilt of not being able to save his friends. Cruger, Kat and Boom become concerned as Sky goes out on a conquest to find the murderers of his friends; he is devastated when he learns the identity of one of the killers. He then takes it upon himself to bring them to justice.