My father, Robert S. Castle (1925-2002), also served on the SS John Regan in 1944. He was a Gunner's Mate with the Armed Guard, trained on the 20mm Oerlikon. I am assembling some pictures for a memorial plaque that I hope to donate to the Liberty Museum Ship John Brown in Baltimore. Let me know if you wish to correspond and exchange whatever photos and tidbits we have about our fathers. I have one picture of my father on an island flanked by two crew mates.