You want my honest advice? If you want to join the army, join the British Army. They're having desperate trouble recruiting at the moment, in fact they are now looking at recruiting from Jamaica!
At the end of the day British troops are trained better and for longer than American troops so you've a better chance of survival, you'll mainly go to Afghanistan, and the British army isn't as hated amongst the middle eastern population as the US army is.
Aim high and get into the Blues and Royal or one of the Parachute Regiments and maybe you'll get into the SAS, which isn't as hard as it sounds, the best regiment ion the world.
Just my 2 cents.
-------
Inspector, don't you know?
Don't you care?
Don't you know about love?