MP will cordon off the target area, provide traffic control, and obtain facts for the initial investigation. MP do not conduct a bomb search, because they are not familiar with the search area. Then other personnel are notified as dictated by local SOP like higher commanders, public affairs personnel, or staff duty personnel. Then fire department personnel are notified. Fire department personnel normally respond to the scene and stand by.
Fire is a common occurrence in connection with an explosive detonation.
Early notification of the fire department personnel can assist in minimizing property damage and injury should a device detonate. Then EOD personnel are notified. Under normal situations, EOD personnel do not respond to a bomb threat unless a suspicious item is located. But they may be able to tell if other threats of a similiar type have been received and if a bomb was subsequently discovered. They may also give guidance if a device is located.