20 CFR 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Shelf life means the amount of time the Board has to remove from circulation outdated missing children information.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.