DEPARTMENT OF THE NAVY
O
FFICE
O
F THE
S
ECRETA
RY
1000
NA
VY
PENTAGON
WASHINGTON DC 20350·1000
SECNAVINST 5430.107A
NCIS
19 Jun 2019
SECNAV INSTRUCTION 5430.107A
From: Secretary of the Navy
Subj: MISSION AND FUNCTIONS OF THE NAVAL CRIMINAL INVESTIGATIVE
SERVICE
Ref: See enclosure (1)
Encl: (1) References
(2) Policy
(3) Definitions
(4) Missions and Functions
(5) Other Commands and Organizations Relationship with
NCIS
(6) NCIS Board of Advisors
1. Purpose. To establish policy and assign authorities and
responsibilities for the Naval Criminal Investigative Service
(NCIS) and its relationship with other Department of the Navy
(DON) activities pursuant to references (a) through (co).
2. Cancellation. SECNAVINST 5430.107.
3. Policy. See enclosure (2).
4. Definitions. See enclosure (3).
5. Missions and Functions. See enclosure (4).
6. Other Commands and Organizations Relationship with
NCIS. See enclosure (5).
7. NCIS Board of Advisors (BOA). See enclosure (6).
8. Applicability. This Instruction applies to the Offices of
the Secretary of the Navy (SECNAV), the Chief of Naval
Operations (CNO), the Commandant of the Marine Corps (CMC), and
all United States Navy (USN) and United States Marine Corps
(USMC) installations, commands, activities, field offices, and
all other organizational entities within the DON.
