NRS 388.231: “Crisis” defined.

“Crisis” means a traumatic and sudden event or emergency condition that:

1. Involves violence;

2. Profoundly and negatively affects or will affect pupils or employees of a public school, or both;

3. Occurs on the property of a public school, at an activity sponsored by a public school or on a school bus while the bus is engaged in its official duties for a public school; and

4. May involve serious injury or death.