When I was in college, I worked part-time for a finance company. One Friday we were robbed by a guy with came in wearing a motorcycle helmet and brandished a .357magnum revolver. There were 5 employees in the store, no customers. Not one of us instinctively held their hands up. As I was physically the biggest person, the robber put the gun to me and told everyone else to lie down on the floor and not to hit any alarm buttons.
Everyone was extremely calm. No panic. No fear. The objective was to give the robber what he wanted and just let him leave. Screw the money...it was insured.
Dumb thing tho.....I walked the robber over to one of two cash draws and let him empty it. We had two draws, one with maybe a couple of hundred dollars and the second, which was kept locked, had several thousand in it. After the BG emptied the first cash draw, one of the clerks lying on the floor told the robber there was another cash draw.
She was never investigated as being part of the robbery. She said she was afraid the robber would become enraged at only finding a couple of hundred dollars and thought that might save me, or all of us from being shot.
The investigating detectives said we all did the right thing. The rest of the afternoon the detectives marched suspects into the finance company for us to identify, but due to the fact that he wore a full face helmet, we could not even begin to guess what he looked like....only how tall he was, and what he was wearing.