A compressed air propulsion system supplies air utilized by a pair of opposing cylinders and their associated pistons and pushpull rods to cause a pair of sprockets to rotate clockwise in a controlled manner. The sourcedrain region has a recess caused by misalignment of the contact pad with respect to the sourcedrain region, the recess causing division of the original sourcedrain region. To assemble the unique system, the footwear is laced with the lace to define opposite lace sections, each of which extends between two of the lace receivers on the same side. In one embodiment, the gaseous fluid generation system includes at least one resistive heating element having a power density selected to heat a fluid selected from the group consisting of a liquid fluid, a saturated gaseous fluid and a superheated gaseous fluid. The instruction fetch within the instruction unit of a processor retrieves the instructions for the short loop from the modified buffers during the loop cycle, rather than from the instruction cache. The first blocking portion touches one terminal of the fixing element.