FOR SUSPICIOUS LETTERS AND PACKAGES
First, if there is a known medical emergency or chemical reaction with the mailpiece, call 911. If you are unable to verify mail contents with the addressee or sender:
FOR A BOMB
FOR CHEMICAL, BIOLOGICAL, OR RADIOLOGICAL CONTAMINATION
FOR AIR CONTAMINATION
FOR A PLACED DEVICE
This guide is intended only for mail center supervisors and their employees.
877-876-2455
uspis.gov
Publication 166
October 2019
PSN 7690-05-000-4890