The Douglas A-20 had no bomb aimer. The pilot was bomb-aimer (as well
as navigator). I believe he used the gunsight, though I am vague on
the details.
all the best -- Dan Ford
email:
(put Cubdriver in subject line)
The Warbird's Forum www.warbirdforum.com
The Piper Cub Forum
www.pipercubforum.com
Viva Bush! blog
www.vivabush.org