#reconnaissance

• Almaz — The name of a highly classified Soviet military space program initiated in the 1960s as a response to similar United States projects. The program involved the development and launch of crewed military orbital space stations (publicly disguised under the Salyut name) and their related transport spacecraft, with the primary objective of conducting orbital reconnaissance and space-based surveillance.
• Advance guard — A military detachment, subunit, or mobile tactical formation sent ahead of the main forces of an army on the march to ensure reconnaissance, prevent surprise attacks, and clear the way. In a cultural or sociological sense, it sometimes functions as a rarely used synonym for avant-garde, indicating a group opening new perspectives.
• Spy plane — A specialized military aircraft designed and equipped exclusively for strategic reconnaissance, aerial surveillance, and secret intelligence gathering. This type of vehicle uses advanced image capturing technologies (high-resolution cameras, infrared sensors), powerful radar systems, and electronic signals interception equipment, often flying at extreme altitudes or utilizing stealth technology to evade detection.