Abstract: An example apparatus includes a sensor to detect a lateral edge of a door curtain within a guide of a door, and a controller to identify when the door curtain transitions from an operational state to a breakaway state based on a signal from the sensor, the operational state corresponding to when the lateral edge of the door curtain is enclosed by the guide as the door curtain moves between open and closed positions, and the breakaway state corresponding to when a portion of the lateral edge of the door curtain below an upper end of the guide breaks away from the guide.

Abstract: A rescue device for oil-soaked birds or other creatures including a sanctuary formed by surrounding walls, a lower floor, and an upper floor above the lower floor having apertures for oil to pass therethrough. The upper floor is attached to the interior of the surrounding walls to form a platform for the oil-soaked animal. The upper floor and lower floor together define a drainage space within which excess oil from the animal can drain. The surrounding walls are inflatable, and the device includes a pressurized gas cartridge having a detonator valve for instantly inflating the walls. The device is hexagonally shaped and includes D-rings attached to exterior surfaces to allow a number of the devices to be hooked together to form a floating island of individual sanctuaries. Interior baffles within the surrounding walls help maintain the hexagonal shape of the device. A number of the devices can be connected together to form a floating island of multiple sanctuaries.