Is SECNAVINST 3850.4B current?

SECNAVINST 3850.4B is listed as current in the DON Issuances (DONI) catalog (publication date 2019-05-29).

Where do I download the official SECNAVINST 3850.4B?

The official copy is published on DON Issuances (DONI) (https://www.secnav.navy.mil/doni/).

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SECNAVINST 3850.4B — TECHNICAL SURVEILLANCE COUNTERMEASURES PROGRAM

SECNAVINST 3850.4B is listed as current Current
in the DON Issuances (DONI) catalog as of our last index refresh (2026-07-11). Note: its publication date is 2019-05-29 — 7 years old — so check for newer interim changes before citing it.

Branch	U.S. Navy
Series	SECNAVINST
Publication date	2019-05-29 (7.1 years ago)
Status	Current
Proponent / OPR	DUSN
Source of record	DON Issuances (DONI)

Official document (DON Issuances (DONI))

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Nearby in the SECNAVINST series

SECNAVINST 3820.3F — INTELLIGENCE OVERSIGHT WITHIN THE DEPARTMENT OF THE NAVY Current
SECNAVINST 3820.4 — (U) OPEN SOURCE INTELLIGENCE Current
SECNAVINST 3850.2E — DEPARTMENT OF THE NAVY COUNTERINTELLIGENCE Current
SECNAVINST 3900.29F — STANDARD FORMAT REQUIREMENTS FOR SCIENTIFIC AND TECHNICAL REPORTS Current
SECNAVINST 3900.38C — THE CARE AND USE OF LABORATORY ANIMALS IN DOD PROGRAMS Current

This is an unofficial index built from the public catalog. The controlling copy is always the one on DON Issuances (DONI) — verify there before citing SECNAVINST 3850.4B in an official product.