1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or... look, we're not listing them all, okay?!
This won't require too much cross-referencing regarding what the markers signify...!
Ever braved a parachute jump, either static line, tandem, accelerated free-fall (AFF), HALO (High Altitude - Low Opening) - or even a BASE jump? * If you've done more than one, opt for the one you enjoyed most!