And pictures. 
I saw the picture and got confused because someone said the reason the crewmen were sitting on the wings was because the pilot couldn't see. It was a logical conclusion what they were saying was the pilot was blind, and that made no sense to me at all. Even a noob like me knows there were no blind pilots in WW2, not to mention spotters couldn't sit on the wings during extreme ACMs without seat belts, at least...and also not to mention, how could the spotters communicate to a blind pilot? Hand signals? And the drag of a couple of seat belted spotters on your wings would maybe effect the aerodynamics of that aircraft.
I'm willing to chalk this one up to a misunderstanding. In the future I hope some of you communicate better, I'm disappointed it took so many posts in this thread to finally work through it...it's like some of you can't understand plain English.