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Public Safety and Transportation


Lockdown Procedures

Know how to respond in the event of a lockdown.

Over the past several years, there have been a number of violent acts committed against university communities across the country. While Adelphi University has been fortunate not to have experienced such an occurrence, it is prudent and responsible to set forth guidelines to address the response and management of a hostile intruder incident or other events that would require a Lockdown or Shelter in Place order. Although the probability of such incidents occurring on campus is minimal, preparedness is important for survival in a hostile intruder encounter or other event requiring the community to shelter in place.

Safety Videos

If you would like to view a video that that provides a survival mindset during an Active Shooter situation, please contact the Department of Public Safety. By viewing this video you will be equipped with the knowledge to make a lifesaving decision by running, hiding or fighting.

The content of this video will not only provide lifesaving information at Adelphi but the same techniques can be utilized in a mall, theater, restaurant or any other public environment.

» View Our Hostile Intruder Video

» Download Our Hostile Intruder Poster (PDF)

Adelphi Door Lock Institutional Video

Over the summer the university installed new door hardware on all classroom doors in the unlikely event of a lockdown. This video provides detailed instruction on how to lock the classroom door from the inside.



When people are instructed to lockdown, it is in response to an active shooter. During an active shooter emergency, people are asked to barricade themselves in a room with no windows, if possible. If a room with no windows is not available in their building, people are asked to cover or stay away from any windows to avoid making themselves or others visible to any potential threat.

The idea of a lockdown is for people to remain properly secured and out of the line of vision of an active shooter until they are told the area is secure.


Sheltering in place is in response to severe weather, and also a chemical, biological or radiological contamination that may have been released into the environment. When individuals are instructed to shelter-in-place, it means the individual or organization should select an interior room or rooms with few or no windows. Once a room has been chosen, people should seal windows, doors and ventilation systems using tape, plastic and weather stripping in an attempt to avoid a chemical disturbance or weather-related disturbance.

Wet paper or wet cloth should be used to seal cracks in the building.

People can increase protection by using whatever means are available to reduce the ventilation rate. Things, like turning off the air conditioning systems, closing all windows and doors, and avoiding using elevators, can help decrease the risk of contamination.

Lockdown or Shelter-in-place

The Lockdown or Shelter-In-Place plan protects students and staff in the event of potential exposure to a dangerous chemical that could be released through:

  • An industrial accident
  • A chemical spill
  • A break in a natural gas pipeline
  • Materials transported through our community
  • A terrorist attack
  • Severe weather events such as a tornado, earthquake, blizzard, or hurricane

» View the Emergency Operation Plan for Hostile Intruders and Lockdowns

Please report all hazards to the Department of Public Safety and Transportation immediately.

Dial 5 Only for Emergencies


For further information, please contact:

Public Safety and Transportation
Levermore Hall, Suite 113
p – 516.877.3500 or dial "5" from any on-campus phone

Regular Office Hours
Monday–Thursday: 8:30 a.m.–6:00 p.m.
Friday: 8:30 a.m.–4:30 p.m.

After hours calls will be received by the 24-hour Public Safety Command Center in Levermore Hall, Suite 113.

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