In some areas of the country, there are stations with trucks designed just to refill air tanks, or Mobile Air units. But for the rest of the country, there isnt one specific piece of apparatus that is an air unit. So instead, most companies install a cascade unit into their rescue units. In light of this and the surprisingly large number of stations that have them, I propose that a Air Rescue combo be installed in game to meet this demand. Not only does it help keep apparatus in line, but it also allows for more realistic game play. Thanks and hope you take this into consideration.