A lockdown can also be use to protect people inside a facility or, a

 computing system, from a threat or other external event. in

 buildings doors leading outside are usually locked so that no 

person may enter or exit. A  full lockdown usually means that

 people must stay where they are and may not enter or exit. A 

building or rooms within it, needing to go to the nearest place

 designated safe if not already in such a place. A drill 

lockdown may be held in the absence of a threat, to 

familiarize people with what they must do. A preventive 

lockdown is a preemptive action plan implanted to address an 

unusual scenario or a weakness in system to preempt any danger 

to ensure the safety and security of people, organization and 

system. The focus for preventive action is to avoid danger and 

risks arising from the nonconformance's to the normal

 circumstances, but also commonly includes improvements in

 efficiency. Preventive lockdown are preemptive lockdown to 

mitigate risk. Most organization's plan for emergency lockdown

 but fail to plan for other situations which might quickly degrade

 to dangerous level. These protocols must be based on the type of

 threat, and should be kept simple and short for quick learning and 

implementation, and flexible enough to handle several scenarios.

 This allow administrators more option to choose from which are

 easier to use in various scenarios. this allow administrators more option to choose from which are easier to use in various 

scenarios. In case of a loud scene by a parent or an unarmed petty

 thief being chased by the police through school playground, this 

flexible procedure allow school administrators the flexibility to 

implement a more limited lockdown by teaching in school

 continues, this eliminating need for complete emergency

  lockdown, disruption and delays in resumption of teaching, the 

consequences of not having procedures to implement such

 lockdown is that the situation might quickly escalate where there

 could be loss of human lives