Aerospace Engineering - Purdue, UM, UW, UCLA, UCD, UCI and UCSD

UM - University of Michigan Ann Arbor.
Thanks for the replies.
Son really likes airplanes… and wants to work in the industry, at least for now.
Is ME easier to get in than AE at Purdue? I forgot if UM accepts students as first year engineering students or directly to their majors. However, UCs requires them to put down majors in the application. He can’t change it even if he wants to, right?