According to the portal, the aircraft with tail number 61-2670 was located above Chita.

08:00 MSK
US Air Force Observation Plane Boeing OC-135B # Open # Skies, tail number 61-2670, callsign # OSY12F, in the coverage area of ​​the receiver in Chita, UIAA.

- PlaneRadar (@ ua4wiy_) February 22, 2019

It is noted that the flight was made under the Treaty on open skies.

In late January, it was reported that a Russian Su-27 fighter was raised to intercept an American reconnaissance aircraft P-8A Poseidon.