Jumpers Over Seventy (JOS)

Being over 70 years old and having made at least one parachute jump (tandem, static line, accelerated free fall, or freefall) qualifies you to join JOS.
JOS was started by Canadian jumper Bill Nasby in 1999 at the 5th World POPS Meet hosted by The Fraser Valley Skydiving Centre at Chilliwack, BC, Canada.