Welcome, Power Armor...Is this your first fanfic by the way? Just curious.
Regardless, The Wasteland Chronicles is a great idea. Just surviving in the wastes, but um. I would scratch the backgrounds, their great in RP's do give other people a quick look on what your characters about, but not when writing fan fic. Their back story could be used later in a segment to give emotional value to one of the characters, if you say it flat out from the start that chance is loss.
Other than that, there's not much to say as this was pretty short. Once you get a longer entry up I'll give some more valuable pointers, possibly.
Anyway, keep it up Power Armor.
P.S. Subject five seems like Subject Zero from ME2, just saying...