Originally posted by justin_g
In this photo http://www.wpafb.af.mil/museum/research/bombers/b24d-8.jpg you can see side windows on a B-24D that are the same with the horizontal bracing in the middle.
Also in this image http://www.zenoswarbirdvideos.com/Images/B-24/B24ARM.gif you can see the gun position with the X shaped bracing and the same relative location to the waist gunner.
EDIT: I posted before the post above - seems to me that for the above configuration to be the one in the photo, the tunnel gunner would be pointing his gun forwards, and the photographer would have to be standing in the bomb bay?
I think you had it right the first time!
He is pointing the gun forward. You can see the waist gunner behind him as the photographer is looking back from the area right behind the bomb bay. I've flown in the Colling's Foundation B24 and there is an area right there. The Colling's foundation B24 has seats for the passengers in that area behind the bomb bay and in front of the ball turret.
In Pathfinder B24s the radio man was in the area above and behind the Bomb bay while the radome for the radar was in the place of the Ball turret. There is definately room for the photographer in the photo

It's definately a tunnel gun in place of the ball turret. Note the bracing on the side windows that match what is seen in the profile. The windows behind the waist don't have that, which confused me when I thought the gun might be placed next to them
I really thought it was behind the waist because I could see the windows on early B24 photos, but that would put it right in place of the rear entrance/escape hatch. It didn't make sense that they would block that off as that is where the tail gunner in particular bailed out from. He'd have to get all the way to the bomb bay otherwise, and in a damaged, burning about to explode aircraft, that's a long walk.
Having researched a B24 crew that was shot down, I know the tail gunner had it down to seconds in how he rolled out of the turret, strapped on his chestpack and rolled out that hatch. They practiced it and if he'd had to go all the way to the bomb bay, he'd have been killed.
Added another image. Yes it's a profile but it does show the tunnel gun pointed forward. There are numerous profiles done in the book with about half showing the gun pointed forward.
Dan/Slack
