I'm 17, almost 18. I got this letter in the mail. Dear registrant: Please keep this letter or the wallet sized registration acknowledgment provided below as proof of your registration. Please review it carefully. Use the top portion of this letter to update and/or correct your information. Mark through any mistakes and write the correct information. And on part of the letter says if I move I to notify selective service system within 10 days of any change. What the hell is this?? I didn't sign anything. I'm not going to the military right? I don't want to work for the NWO. Why do I have a selective service number?