Run this by me again?
You have to lock the gun away when you open the door to go for a slash.?
So, when the door is open, the time of max vulnerability, you have the gun
locked away, but when the door is locked, and there is little threat, you
can take it out and .......
Nah, that cant be right.....
But it probably is.
Precisely the discussion I had the first time an FFDO showed up to fly with me. We were given very little information and it was the first time I heard what the protocol was. BTW - they have to lock it away so a bad guy can't take it from them if they get into the cockpit when the cockpit door is open. (How about designing it so the door is never open to the cabin?)
Frankly, at this point I'm more concerned about someone tossing something into the cockpit through the open door. A broken bottle of Chanel #5 will take me down in a second!