BY ORDER OF THE COMMANDER
US AIR FORCES IN EUROPE AIR
FORCES IN AFRICA
AIR FORCE INSTRUCTION 16-604 US
AIR FORCES IN EUROPE-AIR FORCES
AFRICA SUPPLEMENT
2 APRIL 2019
Operations Support
IMPLEMENTATION OF, AND
COMPLIANCE WITH, THE TREATY ON
OPEN SKIES, THE TREATY ON
CONVENTIONAL ARMED FORCES IN
EUROPE, AND THE VIENNA
DOCUMENT ON CONFIDENCE AND
SECURITY-BUILDING MEASURES
COMPLIANCE WITH THIS PUBLICATION IS MANDATORY
ACCESSIBILITY: This publication is available on the e-Publishing website at
http://www.e-Publishing.af.mil for downloading.
RELEASABILITY: There are no releasability restrictions on this publication.
OPR: USAFE-AFAFRICA/A8X
Supersedes: AFI16-604_USAFESUP,
23 April 2015
Certified by: USAFE-AFAFRICA/A8X
(Col Jay Junkins)
Pages: 7
This supplement implements and extends the guidance of Air Force Instruction (AFI) 16-604,
covering Air Force implementation of, and compliance with, the Treaty on Open Skies
(hereinafter referred to as Open Skies). This supplement explains how Gateway support for
United States Active Observation Missions (AOMs) are executed and how United States Air
Forces in Europe (USAFE) prepares for and reacts to foreign Open Skies overflights over
USAFE sites within the United States European Command (USEUCOM) Area of Responsibility
(AOR). It also supplements guidance for the Treaty on Conventional Armed Forces in Europe
(hereinafter referred to as the CFE Treaty) and the Vienna Document on Confidence and
Security-Building Measures (hereinafter referred to as Vienna Document). This publication may
not be supplemented or further implemented/extended. This supplement applies to active duty
United States Air Force (USAF) units located throughout the USEUCOM AOR. It also applies to
Air Force (AF) detachments and offices located on Host Nation (HN) sites in theater. This
supplement applies to Air Force Reserve Command (AFRC) and Air National Guard (ANG)
units operating in the USEUCOM AOR. The authorities to waive wing/unit level requirements in
this publication are identified with a Tier (“T-0, T-1, T-2, T-3”) number following the
