I have several times heard that the policy to require family members to serve on different ships was put in place because of the Sullivans. But here it is made clear that the policy existed before them, and the Sullivans demanded it be waived as a condition of enlistment.
Maybe the waiver option was removed after the Sullivans died.
Two destroyers have been named for the brothers, the present ship is an Arleigh Burke class Aegis destroyer.
The attack on the Cole was originally intended for The Sullivans, but the muzzies overloaded their boat and sank it.