Signals intelligence

1964 reconnaissance aircraft family by Lockheed

1955 reconnaissance aircraft family by Lockheed

unmanned reconnaissance and strike aircraft built by General Atomics

family of unmanned aerial vehicles

1958 maritime patrol aircraft family

thumb|right|upright|A radome at [[RAF Menwith Hill, a site with satellite uplink capabilities believed to be used by ECHELON]] thumb|right|RAF Menwith Hill, [[North Yorkshire, England]] thumb|right|Misawa Air Base Security Operations Center (MSOC), [[Aomori Prefecture, Japan]]

1964 naval confrontation between North Vietnam and the United States

high-altitude, remotely-piloted surveillance aircraft introduced in 2001

intelligence-gathering by interception of signals

1949 bomber aircraft family

reconnaissance aircraft family by Boeing

reconnaissance aircraft by Lockheed

maritime patrol aircraft family, later British Aerospace

1944 Banner-class environmental research ship

unmanned combat aircraft demonstrator built by General Atomics

1967 Israeli attack on American navy ship

thumb|upright=1.35|First SOSUS stations Sound Surveillance System (SOSUS) was the original name for a submarine detection system based on passive sonar developed by the United States Navy to track Soviet submarines. The system's true nature was classified with the name and acronym SOSUS classified as well. The unclassified name Project Caesar was used to cover the installation of the system and a cover story developed regarding the shore stations, identified only as a Naval Facility (NAVFAC), being for oceanographic research. The name changed to Integrated Undersea Surveillance System (IUSS) i

ship type

Belmont-class technical research ship

aircraft designed for sustained observation over time by onboard persons or sensors

type of aircraft

unique nuclear guided missile submarine

reconnaissance aircraft family

codename referring to investigations and studies of compromising emanations

1978 United States federal law

authorized telecommunications intercept point

aviation accident

branch of the United States Army creating and managing communications and information systems for the command and control of combined arms forces

espionage mission of the USA directed to the Soviet Union

spy ship class

1945–1955 British Secret Intelligence Service program to infiltrate its agents into Poland and Baltic states

Swiss intelligence gathering system

Soviet reconnaissance ship

2013 class of Russian intelligence ships

thumb|300px|right|A DGSE site in Domme, Périgord "Frenchelon" is the nickname given to the signal intelligence system operated by France. The name is a reference to its Anglo-American counterpart ECHELON.

signals reconnaissance aircraft series by Lockheed

maritime patrol aircraft model by Lockheed

ship type used to track missiles, rockets, and spacecraft

1957 Skate-class submarine

Wikimedia list article

Canadian forces station in Nunavut, Canada

American low-level airborne ground surveillance system

intelligence gathered from the interception of foreign electromagnetic emissions

SEXINT is the practice of monitoring and/or characterizing/indexing the pornographic preferences of internet users in an effort to later use the information for blackmail. The term is a portmanteau of sexual intelligence retrieved on an intelligence service target and was first used by Jennifer Granick, Director of Civil Liberties at the Stanford Center for Internet and Society.

unmanned combat aircraft demonstrator built by General Atomics

United States spy satellite series

radio-electronic jamming system

Canadian military base located in the same neighbourhood