4-83. If a large response is needed in the USNORTHCOM AOR, DOD commits a standing joint task force assigned to USNORTHCOM and a defense CBRN response force. Highly trained and specialized CBRN units such as technical escort units and Defense Threat Reduction Agency teams may augment the DOD response. In a large CBRN incident, DOD installations serve as staging areas for military and civilian entities. In a large CBRN incident, military forces can provide security and essential services. Food distribution points as well as the National Pharmaceutical Stockpile or inoculation sites could require security measures. Water supply, trash collection, medical screening, and augmentation of local government could become support missions during recovery.