A few comments in case there are any helpful nuggets:
- I was set on Aerospace from a young age so didn't have to weigh multiple options, can't help much there other than to say if he waits to decide until after his first year he'll be fine.
- It might be worth doing some engineering job searches on indeed to see what's appealing to him, including any geographic preferences if he has any idea where he'd like to live some day.
- Not sure if Tech has a strong co-op program but I'd highly recommend taking that route if possible, particularly if he can get in with a company he'd like to work for after graduation.
- I did a 1-year co-op between my soph/junior years and another summer term the next year. Great real world work experience for the resume, and it is an extended interview from the employer's perspective. In my case, I went to work for the same company upon graduation and still work there today.
- My career started Aerospace-heavy but my job is in an R&D environment, so an individual career path is a little more "choose your own adventure" than most. My work is now more closely aligned to electrical engineering. Lots of opportunity in this area with vehicle electrification, batteries, autonomy, etc. if any of that sparks his interest.