Our UAVs can be used for aerial surveillance by obtaining real-time information and transmitting it to the command center on the ground to allow real-time situation awareness and decision-making. In the mean time,

UAVs can take the place of the fixed surveillance cameras installed in public places, since the latter lack flexibility and are constantly under the risk of vandalism.
In situations of riot or large-scale public gathering,

 UAVs can carry audio amplifiers to broadcast important messages to the crowd and also to transmit live video to the police command center, to help the police monitor the development of the events and to respond quickly.

UAVs can also carry medical equipment or supplies to the crowd when it is difficult to do so through ground transportation. In addition, UAVs can also act as a low-altitude satellite to relay information between the command center and the scene.