On this link is a write-up about Samuel H Schmerler, who was R/O - gunner on the final flight (note Schmerler was mentioned in Larson's findagrave link as being on the crew).
He relates a few more details of the mission. It was to Fismes R/R Bridge. Kulick (referred to as a photographer from Popular Science) sat in Schmerler's R/O chair while Schmerler manned his gun. The plane's hydraulics were shot out and the bomb bay doors were jammed. In the crash landing the pilot, co-pilot and photographer were killed with Schmerler saying that if he would have been in his "normal" position, he would have been killed.
https://books.google.com/books?id=_6...france&f=false