I saw him on a few interviews over the decades and he always came across as a modest man - despite his undoubted skill at piloting. Called the greatest piece of flying in WW2. Stephen Ambrose' book on Pegasus Bridge is an excellent book (the only decent one he wrote in fact)
"... and with their faces blackened with burned cork or coke" No fancy H&S skin assesment, what will happen if their skin gets a reaction type question. As to the risk assesment for that operation it would be about 50ft thick if you tried to do it today.