How do I get legal residency with no immediate family?

I am a Bahamian wishing to enlist into the US Marines. I am currently living in The Bahamas. I have no immediate family that are US citizens or legal residents. Is there anyway that I can gain legal residency to join the US Marines?|||No. Visa info here: http://travel.state.gov/visa/immigrants/鈥?/a>|||Short answer: you cannot.