dallas 2016 they strapped a bomb to a roomba to kaboom some dude in a standoff  

https://www.texastribune.org/2016/07/08/use-robot-kill-dallas-suspect-first-experts-say/

nostr:note1wft8ttcq84achs6p5r2n2npt4jx8x3hnp8p6sz2g4vn2xr0aswksatwmjz