Cocowheats-To answer your question, as long as you are a licensed skydiver and can breath air through a mask, you are good to go. Specifically, any USPA license is fine, A, B, C or D is acceptable as a solo jumper. And we will train you on the operation of all the gear, including breathing with the mask. No jump number requirements, as one must have a minimum of 25 jumps to get a USPA license. It is just a REALLY LONG freefall...about 2.5 minutes.
Paul Gholson S&TA & HALO Oxygen Monitor