Abstract: A restraining device of a seat unit protecting a person without relying on a supporting surface. The first part extends from its first end in a first direction over the shoulder of a person sitting in the vehicle seat to a backrest-distal second end being located in front of the person's head and/or torso, and in a second direction from a person-outer third end to a person-inner fourth end. The second part extends in a third direction from a fifth end to a sixth end and from a backrest-proximate seventh end to a backrest-distal eighth end, such that a least an upper section of the second part extends laterally of the person's head. The third part extends in the second direction from a person-outer ninth end to a person-inner tenth end, such that at least an upper section of the third part faces the person's face.

Abstract: A security system includes an autonomous unmanned aerial vehicle (UAV) including an airframe with a power source and a propulsive system operatively mounted to the airframe for sustained, autonomous flight of the UAV. A flight control system is operatively connected to the airframe, propulsive system, and power source to control the sustained, autonomous flight of the UAV. An imaging device is mounted to the airframe. A wireless communication device is operatively connected to the imaging device to wirelessly transmit data including images from the imaging device. A remote server is operatively connected to receive the data transmitted wirelessly from the wireless communication device, wherein the remote server is operatively connected to communicate the data to emergency responders.