William W Vickrey was the Co-Pilot in the Hall Flight Crew. The Hall crew started their final training with the 819th Bombardment Squadron in about May 1944. They began combat duty with the 392nd Bombardment Squadron in July 1944. Their missions would have been based out of Saipan, and their most frequent target was Iwo Jima. They completed their required 40 missions in Jan 1945.