To the best of my knowledge, there are no AGE people active here. It is however, a rather large dept in the summertime. In the winter there is just one who does maintanence and repairs inbetween seasons.
I’m not the expert here, but I believe Age duties fall along 2 lines. The persons who are inside doing repairs and the flight line personnel. Prior to the planes coming in the flight line mechanics start all the ground equipment like heaters and apu’s. While the plane is on the ground they monitor the equipment. They also may have other duties like marshalling in the planes and standing by with fire extinguishers.
Not much help, sorry, I’ll see if I can find someone who knows more.