A system and method for generating a vehicle fleet configuration for purchase, replacement, andor deployment of vehicles include an input device configured to receive user input indicative of a number of vehicles to purchase and at least one fleet operational parameter target. A frequency generator outputs an auxiliary frequency corresponding to the sum or difference between the radio’s transmit and receive frequencies. When the voltage of the power supply VDD is sufficiently high, the data-writing request signal WR is unchanged. The air cover may be tack welded to the housing before welding the overlap for securing a positional relation between the air cover and the housing. The fluid containing body is located in the recessed portion and has a volume less than the volume of the recessed portion wherein the fluid containing body can deform in the recessed portion upon impact from the force to thereby increase the amount of energy absorbed by the protective gear.