I just went down the rabbit hole of ATC hiring policy: you can't be hired before 18 (given the educational requirements, this is impossible in practice, anyways

I just went down the rabbit hole of ATC hiring policy: you can't be hired before 18 (given the educational requirements, this is impossible in practice, anyways); but must be hired before you turn 30. You face mandatory retirement at 56. I wonder how that compares to other fields? I think that's probably comparable to tech?