A hand-thrown toy parachute has a canopy. The approach involves protecting the vehicle from one or more other vehicles or obstructions positioned, or moved into position, near the vehicle by deploying at least a portion of one or more load bearing members supported by a mounting member attached to the vehicle to a predetermined position within a range that includes a fully refracted position and a fully extended position. The image sequence file is generated by encoding the succession of the image frames using at least one variable compression parameter, which is adjusted during the encoding responsively to the target size. The second terminal measures a trait of the received signal and encodes the measurement data into the packet stream that the second terminal is already transmitting to the first terminal. , three instructions, are executed redundantly so that the redundancy system can detect and recover from a single event upset. The additional data may include data that has also been marked as write pending.