COMDTINST M16465.6A — National Incident Commander’s (nic) Manual For Spill Of National Significance (sons) Management

COMDTINST M16465.6A governs the procedural transition to a Spill of National Significance and the roles and functions of the NIC staff.

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  • Publication number: COMDTINST M16465.6A
  • Title: NATIONAL INCIDENT COMMANDER’S (NIC) MANUAL FOR SPILL OF NATIONAL SIGNIFICANCE (SONS) MANAGEMENT
  • Date: 7/29/2021
  • Proponent: CG-MER

View COMDTINST M16465.6A on armypubs.army.mil


The publication covers SONS declaration and NIC designation, NIC and staff roles, interagency coordination, communications, severe weather planning, airspace control, and demobilization. It requires strategic communications, critical-resource sourcing, documentation preservation, and prerequisite training considerations for NIC candidates.

Applies to: All Coast Guard unit commanders, commanding officers, officers-in-charge, area commanders, deputy/assistant commandants, and chiefs of headquarters staff elements must comply with the provisions of this Manual.

Topics covered

  • SONS declaration procedures
  • NIC designation
  • NIC staff roles
  • Interagency coordination
  • Strategic communications
  • Critical resources
  • Severe weather planning
  • Air space control

Questions and answers

What training should a senior leader candidate for NIC appointment have?

Senior leader candidates for appointment as a NIC should have participated in a SONS exercise or seminar within the last four years. (paragraph 4-1)

What authorities does the NIC require to direct responsible party actions?

The NIC will require CWA § 311(c) and (e) authorities to carry out his or her responsibilities. (paragraph 1)

How often must response information be communicated during a SONS?

NIC, UAC, and Incident Command Post (ICP) planning staffs must establish an incident-specific information flow battle rhythm that communicates information on the response at least once daily through formally established channels for dissemination. (paragraph 1)

Are there maximum requirements for critical resources during a SONS?

There is no maximum requirement for these resources. (paragraph 1)

What does the severe weather contingency plan provide for response operations?

The severe weather contingency plan provides contingencies for directing the timely and effective suspension of response operations, relocation of response assets, and the reconstitution of those assets thereafter. (paragraph 5)

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