A system includes an unmanned aerial vehicle (UAV). The UAV may include a camera device configured to capture at least video data; a receiver configured to receive wireless communications; a transmitter configured to transmit wireless communications; storage linked with the camera device, the receiver, and the transmitter and configured to store data captured by the camera device and wireless communications received by the receiver; and a processor linked with and configured to exercise control over the camera device, the receiver, the transmitter, and the storage. The UAV is configured to dock with a docking station mounted on a vehicle. The UAV may have other components such as a microphone and sensors, and may perform various functions such as surveillance, tracking, warning, and data storage, transmission and relay. Associated methods and docking stations are also disclosed.