 Electrical engineering, that's okay. Just say I'm doing civil engineering. Yeah sorry, I forgot already. Aerospace, it's about aircraft, satellites and rockets. How do we get them off the ground and how do we keep them off the ground? Civil engineering is everything you can see above and below ground. So it's the infrastructure, the pipes, the roads, the bridges, the buildings, everything. So computer systems is just a lot of computer stuff. Electrical engineering is basically coming up with creative ways to cause electricity into doing something useful for us.