TPL Co-Director Ryan Calo was mentioned in an article that discusses the controversies concerning the use of surveillance drones in public life. In some states, drones with facial recognition software were banned unless law enforcement found a probable cause or suspicion of imminent harm, escape of a suspect or ‘the destruction of evidence.’” Since drones are now being widely used, some states took action to ban weaponized drones for the safety of their constituents. Ryan Calo predicted the prevalence of drones in a Stanford Law Review article, claiming that states will have to consider the effects of drones and how they are used in public life. In other states, unarmed drones are allowed and intended to help protect communities.