I'm a member of USJTF and I never heard of them until one day playing with a few friends at a local game. A group of USJTF guys approached our small unit and asked if we would like to join. They explained a bit of the details and gave us contact information so we could look into it. We didn't have to change anything about our group. We started a new unit under USJTF in our area, switched up our uniforms, and enjoyed kicking ass.
It is an interesting concept creating a world wide airsoft organization. The reason I like being a member of USJTF is because no matter where I play if there is another member we can link up and kick ass together knowing that we aren't going to screw up. I also enjoy that this unit does not use any real military insignia or patches. Everything is custom designed out of respect for the armed forces. If you didn't earn it, you don't wear it.
Most of the staff and higher ranking individuals are former military. If you are looking to become part of something greater then take a look into it. If you already have a unit and your group as a whole would like to join that is an option. If you are a solo individual I'm sure there is something around.
I started in Wisconsin, moved to Texas, and about to move to Arizona to start college. Looking forward to some fun times.