Mail-handlers are to be both observant and cautions in their duties.  Any suspicious packages, packaging containing written threats, clockwork mechanism sounds, unsealed envelopes with a white powdery substance spilling out, packages with needles, wires, stains, etc should be reported to the Office of Campus Safety/Security immediately, who will in turn notify the proper authorities, including the President and her/his designees.  If you should handle contaminated/suspicious mail, wash your hands immediately using plenty of soap and water. DO NOT FORWARD SUSPICIOUS MAIL/PACKAGES.