Force Force Registration Gamer PictureDownloading this gamer picture registers eligible gamers for the Call of Duty: Modern Warfare 2 Download and Win Sweepstakes. NO PURCHASE NECESSARY. Open only to legal residents of the 50 US or DC 18+. Entry Period Starts: 12:01 a.m. Pacific Time (PT) on 9/1, and ends at 11:59 p.m. PT on 9/26. By downloading this item, you are allowing Microsoft to contact you from time to time about this Sweeps. For details including free, alternate method of entry, see http://www.xbox.com/AirForceCOD