I got a invitation letter to this, along with an extremely similar one from the National Young Leaders Conference. Same paper, font, location/tie etc. I was wondering whether the two had any relation.

Also, I am registered for the spring session in National Security. For those of you who have attended, was the experience worth it?

If I recall correctly, both NYLF and CYLC (the group that operates NYLC) are both owned by the same company. Envision, maybe? I don't think they are really affiliated, though.