Aha....isn't Google great....I am reading the gliding sequence in Seveneves and figured Neal was either a glider pilot or had been gliding. The book is EPIC...I now know more about orbital dynamics than I ever wanted to....but it's a case of hanging in there. Winter here in New Zealand...our new Arcus M has just arrived..and Neal is helping pass the time until the weather improves enough to go soaring...T