There was an "Amazing Stories" episode about a ball turret gunner who liked to draw cartoons.
On his way back to England, he was stuck in the ball and the gear would not extend so he drew big wheels and concentrated himself into a deep trance. The wheels appeared in cartoon form somehow telekinetically.
The B-17 landed safely, they extricated the cartoonist, his trance broke, and the gear dissappeared. The ball turret was crushed as the turret gunner stepped into a jeep.
Based on a true story.