The Lightbown Crew of 431 Squadron shown with Lancaster  X, KB-806 coded SE-X.

Crewmembers are: 
F/O J. R. Lightbown DFC RCAF, Pilot (back row 2nd from right); F/O F. J. Kumsky RCAF, Navigator;
P/O B. D. Stickles RCAF, Bomb aimer; Sgt A. A. Crossan RCAF, Wireless OP; Sgt W. G. Weese RCAF, Mid-upper gunner;
Sgt J Wilkinson RCAF, Rear gunner (back row far left); 
Sgt W. Blythin RAF, Flight Engineer (front row far left).

Photo courtesy of 
Gary & Tana "Lightbown" Hendricks, Daughter and Son In-law.
I was told that this picture was taken after their last mission to Munich - Germany January 7th-8th, 1945.
  Jim (Lightbown) flew 32 missions and was awarded the DFC."