When the pressure in the annulus exceeds the pressure of the gas in the on board storage tank, a signal will open the valve to the on board storage tanks and {HEAD ~ the gas} inside the bladder will be forced out to the on board storage tanks in {TAIL ~ one or two vehicles}, simultaneously, or individually, as the choice may be 
When the pressure in the annulus exceeds the pressure of the gas in the on board storage tank , a signal will open the valve to the on board storage tanks and { HEAD ~ the gas } inside the bladder will be forced out to the on board storage tanks in { TAIL ~ one or two vehicles } , simultaneously , or individually , as the choice may be
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