Perhaps if we separate it, its meaning is simplified. Air adjective of the airy aerial gr. Evacuation. From Latin evacuatio and this one from evacuáre. . . vacate, take out, move. There is usual talk of rescue. Air evacuation, would be that moved people from one sinister place to another, putting them safe.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
