Inspection Service Seal United States
Postal Inspection Service

Security Plan for Suspected Letter and Parcel Bombs


Your organization should assess vulnerability to classic acts of terrorism such as extortion, kidnapping and the holding hostage of key management personnel, as well as other forms of terrorist coercive bargaining. Your organization should be particularly mindful if it maintains a staff and/or facilities outside the United States. If such vulnerability exists, a protective security review should be made. This security review should be heavily slanted toward providing protection against "classic" tactics, whether employed by foreign-oriented extremists or domestic "hate" groups. Consultations with experts knowledgeable in terrorist tactics and a target probability evaluation procedure are highly recommended. Since all organizations receive mail, a letter and parcel bomb security plan is an essential component of this process.

Preparation of the postal bomb security plan

In preparing the Postal Bomb Security Plan, it is generally more advantageous to formulate it as an annex to the basic bomb security plan already in existence, if any. The annex can then detail the specifics required for implementation and operation of the plan without requiring changes in the basic plan or creating undue confusion. Only those concerned with the mail center operation are directly affected.

The following material is intended to provide guidelines for establishing mail center procedures used against postal bombs and will provide the security officer or management official with the necessary basic information enabling that individual to draft a bomb threat plan.

Key points to be developed

Target probability evaluation procedure

The security officer and top management personnel should meet to evaluate the probability of your organization or members of your organization becoming targets for acts of terrorism. The following are typical questions asked during assessment of target probability:

Appointment of the mail center postal bomb plan coordinator

In selecting and appointing the Mail center Postal Bomb Plan Coordinator and an alternate, management should ensure those persons selected are mature, responsible and emotionally stable. Where possible, this selection should be made from those persons already involved in the overall bomb threat program and who have already received training under that plan.

The function of the mail center coordinator (or his/her alternate) is to assume command of the situation when a suspect postal item is encountered in the screening process. The coordinator is initially responsible for seeing that personnel who have detected the suspect postal item place sufficient safety distance between themselves and the item and that employees, in general, do not cluster around the item out of curiosity. The coordinator will then notify management directly and provide them with specific details of the suspect item and carry out the remaining steps of the plan under the direction of management and security.

Direct lines of communication to management & security officer

Direct channels of communication between the mail center coordinator and management and security is vital. Security must receive prompt notification when a suspect postal item is encountered so notification may be given to the supporting police bomb squad and management in order that the controlled and responsible actions/decisions concerning the suspect postal item may be initiated.

Screening procedures for postal items

Incoming mail in any organization follows much the same pattern. Bags or bundles of mail, as well as parcels, are delivered to a centralized mail center for distribution. (If this centralized receiving procedure is not currently in operation, steps should be taken to institute such a program.) The actual initial sorting of the mail for delivery to units, divisions, or individuals must be done by hand, with each item being picked up, its address read, and the mail item placed into its proper distribution box for delivery. This is the point where screening of incoming mail for suspect items should occur and those individuals who normally handle this mail sorting function should perform the screening action. This is critical because those individuals are most likely to notice postal items that are contrary to normal mail (recognition points).

Considering past patterns of postal bomb construction, packaging, mailing, and addressing, the screening of incoming mail should involve the search for those items of mail that have one or more of the recognition points listed below:

General letter and parcel bomb recognition points

Specific letter & parcel bomb screening points

It should be emphasized the general screening procedure is by no means foolproof. Specific terrorist tactics, packaging, or mailing patterns will render certain elements of the screening process invalid. However, other elements of the screening process will continue to remain valid, plus new/specific elements can be added, via warning bulletins, etc., during periods of specific terrorist activity as they become known, (e.g., dismantling of a bomb currently being used and disseminating its description).

Specification handling procedures for suspected postal bombs encountered during screening

When the mail center coordinator is notified of a suspect item, the coordinator's actions should, in general, be those listed below:

When management or security receives the notification of a suspect postal item from the mail center coordinator, his/her actions should, in general, follow these guidelines:

Identification/verification of suspect postal item by addressee and/or sender

Before calling the bomb squad, the security officer should attempt to find out if the sender or addressee of the suspect postal item has any knowledge of the item or its contents. If the addressee can positively identify the suspect item, it may be opened by security with relative safety. If only the sender can be contacted and can identify the item and contents, a management decision must be made as to the reliability of the information.

Below are sample questions to ask the addressee/sender during the identification/verification process:

Establishing an isolation area for suspect postal items

When the mail screening process identifies a suspect item, it is essential to rapidly remove the potential bomb from the work flow and personnel and to place it in an area of isolation. The security officer and the mail center coordinator should jointly evaluate the spaces or areas available around the mail center and select one that offers a degree of isolation where a suspect postal item may be placed pending identification and/or the arrival of the police bomb squad. In selecting and creating the isolation area, the following points should serve as general guidelines:

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