I’ve seen Air Force police do the same thing. A guy forgot his badge and was stopped in hallway. Cops at either end both had their guns pointed at him.
Cops were arguing with each other on what he should do. He didn’t move until they settled their argument. They would have shot each other had they opened fire. I was watching behind a heavy metal door so I was safe.
...he should have made the “sudden movement” of dropping to the ground.