A former spouse is obligated to notify the Department of the following on a timely basis:
(a) A divorce from a participant or former participant when the former spouse is notified by the court of the divorce before the participant is notified;
(b) Any change in address; and
(c) Any remarriage.
Notices shall be sent to the Department of State, Attention PER/ER/RET, Washington, DC 20520.