im going to go where none of you have gone....back to the topic of the discussion, i think frank's ancestor's were super-beings of all power that pwnd all the noobs they wanted and now the ghost is in his body and will use his super noob-smiting powers to bring the world into an age of darkness, except it'll be bright because all the noobs will be gone which is a fair tradeoff for living a life of slavery to a guy named frank posessed by a little girl ghost.
sweet and simple alpha comes in and frank kills them all then charlie comes in and kills frank. then it gets to a repeat and one man on charlie is let live to be possessed. this will continue through all the squads