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 or Member and two other persons at least one of whom is not related to the former employee or Member 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.