4-99. The incident staging area is the equivalent of an intermediate staging base. Units move to an incident staging area determined by an incident command staff before moving into a CBRN incident site. The staging area personnel receive the unit's personnel and equipment accountability information and provide details regarding the incident. Before leaving the staging area, a unit receives it mission, safety briefings, and updated information regarding the incident. Debris, contaminated areas, other responding agencies, and terrain conditions might delay movement.