Researcher looking for information on WWII airman from Batavia

Do you know any of the men in this photo? Researcher and historian Teunis Schuurman from the Netherlands is trying to identify all the men, who were aboard a plan believed to have crashed in his hometown during World War II. He believes S/Sgt. Joseph Deffner, from Batavia, is in the front row, but isn't entirely sure which man he is. He's hoping for help in identifying him as well as finding out as much information about him as possible. Teunis can be reached at teun.pats@gmail.com.