any collection or combination of measures to prevent or mitigate damage or disruption to an aggregation of military personnel, weapon systems, vehicles, installations, or support
Security program developed to protect service members, civilian employees, family members, facilities and equipment, in all locations and situations, through the planned and integrated application of combating terrorism, physical security, operations security, personal protective services supported by intelligence, counterintelligence, and other security programs
Countermobility, survivability, and security measures a commander uses to ensure the integrity of his force throughout an operation Normally conducted in a LIC or in rear areas against a viable rear area threat