Thanks, guys. I really appreciate the input. I was expecting to go out today but got bumped (generals take priority I guess) for a few days. I took the opportunity to climb around a Blackhawk this weekend and note places to hook a bungee rig to, then played around with a simple setup in the studio yesterday. That combined with the other advice will likely make this go very smoothly!
Make sure there is nothing the slightest bit loose on the camera because Blackhawks pull some pretty serious g's. I had a lens hood sucked off my camera circling the remains of the "Giant" set in West Texas. Be sure to tell the pilot you're up for anything (they'll regard it as a challenge to get you sick).