Su-27 Flanker intercepts and shadows a P-3 Orion

The video shows a single, fully armed Russian Air Force Su-27 Flanker jet as it intercepts and shadows a P-3 Orion, reportedly flying over the Baltics. This unclassified video was filmed in November 2014 by “one of the sensors carried by a Portuguese Air Force P-3 Orion MPA – Maritime Patrol Aircraft – during a mission over the Baltic Sea.” It’s pretty standard for the Russian Air Force to launch a single fighter jet to identify and escort NATO surveillance planes. This video proves that even the Russians keep an eye on NATO, as well as non-NATO states’ surveillance- and intelligence-gathering activities in the region. 

Source