U.S. Air Force has sent a Boeing RC-135V reconnaissance aircraft to patrol off the coast of the Russian-occupied Crimean peninsula and the Black Sea coast of the Russian Federation near Novorossiysk.

The aircraft with the call sign REMIT41 began patrolling at about 09:00 Kyiv time, according to the Ukrainian Military Portal.

The Boeing RC-135V is based at Souda Bay airbase on the island of Crete.

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UNIAN memo. The Boeing RC-135 is a family of large reconnaissance aircraft built by Boeing and modified by a number of companies, including General Dynamics, Lockheed, LTV, E-Systems, and L3 Technologies, and used by the U.S. Air Force and UK's Royal Air Force to support theater and national level intelligence consumers with near real-time on-scene collection, analysis and dissemination capabilities. Based on the C-135 Stratolifter airframe, various types of RC-135s have been in service since 1961.