20 CFR § 364.2 - Definitions.

---
identifier: "/us/cfr/t20/s364.2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 364.2 - Definitions."
title_number: 20
title_name: "Employees' Benefits"
section_number: "364.2"
section_name: "Definitions."
chapter_name: "RAILROAD RETIREMENT BOARD"
subchapter_number: "F"
subchapter_name: "INTERNAL ADMINISTRATION, POLICY AND PROCEDURES"
part_number: "364"
part_name: "USE OF PENALTY MAIL TO ASSIST IN THE LOCATION AND RECOVERY OF MISSING CHILDREN"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "39 U.S.C. 3220(a)(2)."
regulatory_source: "52 FR 527, Jan. 7, 1987, unless otherwise noted."
cfr_part: "364"
---


# 364.2 Definitions.

For purposes of this part, terms are defined as follows:

*All-A-Board* is the Board's in-house newspaper that is published on an irregular basis about six times a year.

*Field office* is a Board district office. These offices are located throughout the United States.

*Penalty mail* means the official mail of the Board that is used to carry out the Board's duties.

*Shelf life* means the amount of time the Board has to remove from circulation outdated missing children information. This is a three month period, commencing with the date notice is received by the National Center for Missing and Exploited Children that such information is no longer accurate.