From the Document: "Having a plan in place makes the response to bomb threats, unattended items, or suspicious items as orderly and controlled as possible, reducing risk and the impact of false alarms on regular activities. Facility supervisors-- such as school, office, or building managers responsible for the facility--should:  Review the DHS-DOJ [U.S. Department of Justice] Bomb Threat Guidance [hyperlink] and DHS Training Series Video [hyperlink]. Released by the DHS and the FBI, the DHS-DOJ Bomb Threat Guidance is a quick reference guide that provides facility supervisors with details on pre-threat preparation, threat assessment, staff response guidelines, and evacuation and shelter-in-place considerations.  Develop a Bomb Threat Response Plan for their institution or facility. Contact the Office for Bombing Prevention at OBP@cisa.dhs.gov [hyperlink] for more information on planning workshops.  Train employees, tenants, and/or visitors to take appropriate actions in the event of a bomb threat and/or identification of an unattended or suspicious item."
U.S. Department of Education: https://www.ed.gov/