Cryptologic History

"On This Date in Cryptologic History" Calendar

1955: Prototype U-2 Flight

Monday, August 4, 2025

4 August 1955: A prototype U-2 made its first planned flight with Lockheed test pilot Tony LeVier.

The U stood for "Utility" and the prototype never had a serial number. It was referred to as Article 341. The U-2 gave us eyes to see inside the Iron Box. It instantly became a major source of our intelligence about the Soviet Union. It constituted nothing less than a revolution in intelligence.

Learn more via the article links noted below.

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