A facility equipped with a fully sprinkled system must have how many required fire drills between the hours of 11 PM and 7 AM per year?

The requirement for fire drills in facilities equipped with a fully sprinklered system is to ensure that occupants are prepared for emergencies and can respond appropriately to alarms. According to standards and regulations that govern fire safety in such facilities, at least two fire drills must be conducted annually during the hours of 11 PM and 7 AM. This is to mitigate risks associated with night-time occupancy, where occupants may be less alert and more vulnerable during those hours. Conducting these drills helps verify that staff and residents are familiar with evacuation procedures and the use of emergency exits, which is critical for safety when the risk of fire is present. Therefore, the answer indicating that two required fire drills should take place within this time frame is correct.