well, to be fair fugitive, not all airbases had nice concrete runways and fancy hangars either...nor did all ports have reinforced concrete jettys, docks, ammo bunkers, or vehicle hangars full of tanks and other assorted vehicles. we're talking the main arenas here where the concept of realism is stretched to say the least.
considering how supplies were handled and transported it wouldn't be too far fetched for a vehicle base or port to have ammunition and fuel that could be used by aircraft...