They do this from time to time. Almost 50 years ago, they disbanded Stakeout Squad that used to ambush robbers in frequently-robbed stores. They killed about 25 robbers in their 5-year existence.
Stakeout Squad
Greatest tool they had to remove armed robbers IMO. Two man teams. One at the cash register. The other secreted out of sight of the counter. Frequent interchange went like this: Gives me all the cash now. Response “april fool”. Boom
That was clearly documented in a court case when one of two robbers actually lived after sustaining a direct hit by 12 gauge. His testimony at his trial for attempted robbery: “I don’t recall much other than someone jumping up and screaming out “april fool MF, and he blew his s..t away.”