I'm an electronic technician working on several astrophysics experiments at the Bartol research institute at the University of Delaware.
One experiment, Ice Cube, is almost finished deployment phase (my part) at South Pole, Antartica.
Another experiment, Space Ship Earth, is deployed in several locations around the world and I deal with maintenance.
Another experiment, AESOP & LEE, has bi-annual flights to the edge of the atmosphere via balloons (thanks to the cooperation of everyone at NASA's Columbia Scientific Balloon Facility). I perform payload maintenance and upgrades.
I also contribute work on Veritas and Anita.