On July 7, Dallas police officers used a bomb robot to kill the suspected perpetrator of a shooting that left five Dallas-area police officers dead and seven others wounded. While police have used robots to deliver chemical agents and pizza, it looks as if the deployment of the robot bomb on Thursday night was the first time American police officers have used a robot to kill someone. According to Dallas Police Chief David Brown, "We saw no other option but to use our bomb robot and place a device on its extension for it to detonate where the suspect was." The death of the alleged shooter in Dallas should prompt us to think carefully about how new technologies will be used by police to deliver lethal force. Robots like the one used by Dallas police are used by police departments across the country as part of bomb squads. But it's worth keeping in mind that these robots will continue to improve, making it easier for police to use them in situations like the standoff in Dallas. Other tools such as drones could also potentially be used to kill suspects. In fact, North Dakota has legalized the use of armed drones in some circumstances, and Florida law defines a police drone as one that can "carry a lethal or nonlethal payload." As technology improves, using tools such as robots to kill dangerous suspects will become easier, and we shouldn't be surprised if they proliferate. Amid such changes we should keep a careful eye on how and when police use remote devices, especially in cases not as clear cut as the recent standoff.