Good engineering is in the detail.
Continuing working on Mars projects and contribute to learning more about the red planet.
Each phase of the mission from initial design, to development, to testing, and finally onto to operations is interesting and challenging. I have no favorite and the fun part is being able to see the mission through from start to end.
I don't recall, but I do remember building electric motors from scratch out of glass tubes, nails, cork, and wire so I suppose I had an inkling at that time to become an electrical engineer.
Skydiving - here's an image of a record jump I was on in Decemeber 2002.