The current and/or former spouse notification requirement will be waived upon a showing that the current and/or former spouse's whereabouts cannot be determined. A request for waiver on this basis must be accompanied by—

(a) A judicial or administrative determination that the current and/or former spouse's whereabouts cannot be determined; or

(b) Affidavits by the former employee and two other persons, at least one of whom is not related to the former employee, attesting to the inability to locate the current and/or former spouse and stating the efforts made to locate the current and/or former spouse.