In article ,
Big John wrote:

Orval

The only thing that reflects radar is metal or things (like paint)
that have metal in them.


One of the Approach controllers I work with while flying jumpers can see
the open parachutes on the radar. There isn't much metal in a parachute
system.

--
Dale L. Falk

There is nothing - absolutely nothing - half so much worth doing
as simply messing around with airplanes.

http://home.gci.net/~sncdfalk/flying.html