Question: what are the requirements of a navy seal?
Answer: be an active-duty member of the U.S. Navy.
be a man (women aren't allowed to be Navy SEALs)
be 28 or younger (although waivers for 29- and 30-year-olds are possible)
have good vision -- at least 20/40 in one eye and 20/70 in the other (corrective surgery is also possible)
be a U.S. citizen.