Keeps the airfield itself safe, legal and moving.

Everything airside is somebody’s responsibility, and this is that somebody: runway inspections, wildlife control, contractor escorting, snow and ice plans, incident response, and the standing arrangement with the fire service. Almost none of it is visible to passengers, which is the mark of it going well.
Airport or aviation management programmes feed this role directly.
A very common route: handling or fire service experience, then into operations.
No published projectionAirfield operations specialists appear in the Bureau’s wage statistics but not in the Occupational Outlook Handbook, so there is no published projection to quote. The wage data exists; a ten-year outlook does not.
Shift work, in the open, in whatever the weather is doing, and the busiest days are the worst ones. When something goes wrong you are the one coordinating it while several people want an answer at once. Most of the job is invisible when it works, which is also how it is judged.