Where Eagles Dare (1968)

Continuity mistake: When the team are about to jump from the cable car into the river, the view from ground level shows a bare road with no snow on it on the right and a line of trees on the left with German trucks parked next to them, but the view from the cable car shows a snow-covered road and no trucks beside the trees. (02:06:00)

SS-Standartenführer Kramer: Let me remind you, Major, I'm a colonel in the SS and not a lieutenant who you can frighten with your threats.
SS-Sturmbannführer Von Hapen: Your military rank and position are obvious to me, Colonel, and so are your attempts to discredit me with superiors in Berlin.
SS-Standartenführer Kramer: If there is any discredit, you bring it upon yourself. Good night.

Trivia: The idea of helicopters was not necessarily new in WW2, but effective designs were not made until after the war; there is evidence from some literary sources (one of them being a book named "German Secret Weapons of WW2" or something like that) that the Germans did indeed conduct experiments and designs on this vehicle type.

Question: When Richard Burton is holding his gun on all the people in the meeting and asks if one of the guards could come in and watch them, why doesn't the guard just shoot him?