In a rare move, two American surveillance planes, the RC-135S reportedly flew toward Russia’s east coast. 

The two-aircraft mission was undertaken amid escalating tensions and a tense standoff with Russia over Ukraine. 

Online flight-tracking software showed the Cobra Balls flying close to St. Matthew Island, an uninhabited outpost of Alaska in the Bering Sea. 

The US spy planes were reportedly on a mission to monitor the test of Russia’s new Sarmat missiles on April 20. 

Source: CRUX - Youtube