Swedish Air Force Contax camera for Saab Draken jet fighter

Description

A Swedish military camera Contax 137MD,which has been modified to use in Saab Draken jet fighter.
Lens is lock to infinity and shutter is modified too,using only one speed.
Camera changes were done by swedish company TELEPRODUKTER AB,in Stockholm.
Similar camera was made for Saab Viggen fighter pilots also,with body of Contax 137 MA.
Lens is Carl Zeiss Sonnar 2.8/85 mm.
I found very little information of this camera from internet.