Originally Posted by
Bloodhound
I think the recent explosion could be partially attributed to 9/11 but they've been around for a while.
Not really, the explosive growth happened prior to 9/11 (98-00). There was a "slight" spike in interest (from owners) after 9/11, but it soon returned to normal growth. The only spike I've seen lately is in the interest of airline pilots looking toward this side of the industry.