Who is most likely to have keys for immediate access to a building during a shooting incident?

The custodian is most likely to have keys for immediate access to a building during a shooting incident because custodians typically have unrestricted access to all areas within a facility. Their role often requires them to enter various spaces for cleaning and maintenance duties, which means they are entrusted with a set of master keys that allow them to open doors as needed.

While security personnel may also have keys or access codes, their role primarily focuses on maintaining safety and security rather than having broad access like a custodian. Receptionists usually have specific access tied to their front-desk duties and may not have keys to all areas. IT technicians, while they may require access to certain technical areas, do not typically have authority over general building access. Therefore, in an emergency situation requiring immediate entry to various parts of the building, the custodian is the most likely individual equipped to facilitate that access swiftly.