Abstract: A transport unit particularly adapted to contain an injured person in a manner that the person can be moved with relative comfort and safety. There is a rigid containing structure having inflatable cushions positioned therein and arranged to fit the contours of a person's body. The person is placed in the container, and a lid of the container is placed over the person, with the cushions then being inflated to firmly, yet gently, hold the person in place.

Abstract: A phased array radar having a plurality of antennae, each connected with a respective receiving channel, is provided with apparatus to suppress variations in phase and gain in the receiving channels. The apparatus injects a reference signal into a normally provided head amplifier in each channel, which then passes through the same amplification and frequency changing circuits as the signal induced in each antennae. Thus the differential phase shifts of the reference signal and the radar carrier frequency are substantially constant. The gains of the head amplifiers are controlled by the action of an AGC loop.