Hi Al R.
Could I recommend a visit to the Yorkshire Air Museum at Elvington, Nr York. If you write to the director, explaining he is an ex D.F,M tail 'end charlie' he may be given permission to enter the Halifax with a guide. He may be allowed to sit in all seats, ask questions. and enjoy a meal in the N.A.A.F.I. at a reasonable price I wrote to the director, was given permission as a veteran to go inside the aircraft with a quide. Think there is a section on air gunnery, as well as other aircraft
Very nostalgic. They will mention a donation can be made.
PLEASE. How about you contributing , on his behalf, some of his stories to 'Gaining a Pilots Brever in ww 2' he is more than welcome.
N.B Members of the public are not allowed inside the aircraft, due irresponsible behavior ' in the past.