"Throwable Robots are a scouting and surveillance tool for law enforcement and military personnel. They provide situational awareness in unknown and potentially dangerous environments. They can be used to search confined spaces, assist in disposing of explosives, and inspect vehicle undercarriages. Throwable robots have been used or are being used by more than 550 U.S. law enforcement agencies and the U.S. military."
Department of Homeland Security: https://www.dhs.gov/