I had the opportunity to tour through this particular B-24 a few years ago in Carlsbad CA. I think the Collings Foundation operates this aircraft and a B-17 which was also present that day. The B-24 interior is a lot smaller than it looks from the outside. Figure 10 crewmen and a load of bombs and things are pretty cramped. The Navigator / Bombardier position are very cramped into one small space. Dad flew most missions without a bombardier and he performed that task along with navigating. They would normally follow a lead aircraft and would drop their bomb loads when the lead plane dropped theirs'.
I've read that there is only one flying B-24 left but this one is definitely a different one from the Collings aircraft. These photos were pulled from various sites on the Web.