“Three fired cartridge cases alongside three unfired cartridges were found at the scene. The words “delay”, “deny”, and “depose” were written on the cases. “Depose” was inscribed on a casing from a round fired into Thompson, while “delay” was marked on an unfired cartridge ejected as the shooter racked the pistol, possibly to clear a jam or intentionally discard the live round.”

https://en.m.wikipedia.org/wiki/Killing_of_Brian_Thompson