Police officers across the nation have an arsenal of high-tech devices to help them investigate and solve cases. From eye-in-the-sky drones to GPS vehicle pursuit darts, here’s a look at five tech tools that are being used or tested by police to protect their communities. Some of these technologies are relatively uncontroversial, while others have raised eyebrows among privacy and civil rights advocates. The legality of one has been called into question by the courts, highlighting a potential pitfall of using advanced tech to conduct police work.”]