A Russian SU-27 Flanker intercepted a US Navy P-8 Poseidon plane in the Black Sea. Reports are the SU-27 was as close as 10 feet to the US Navy patrol aircraft.

Russian fighter planes have continued their aggressive nature when it comes to operations in international waters against US aircraft and ships. The latest incident involves a Russian SU-27 Flanker intercepting one of the US Navy’s newest aircraft–the P-8 Poseidon.

The incident between the Navy P-8A Poseidon surveillance aircraft and a Sukhoi Su-27 Flanker occurred at about 11:20 A.M. local time in international airspace over the Black Sea. It lasted approximately 19 minutes according to a statement provided by the Pentagon.

“These actions have the potential to unnecessarily escalate tensions, and could result in a miscalculation or accident,” Pentagon Spokesman Jeff Davis said in a statement. This is not the first time Russian aircraft have been overly aggressive agains US forces in the same area.

Back in April, Russian SU-24 fighters came dangerously close (some estimates as near as 30 feet) during flyover runs to the USS Donald Cook in the Baltic Sea.

“During the intercept, which lasted approximately 19 minutes, the Su-27 initially maintained a 30-foot separation distance then closed to within 10 feet of the P-8A, which is considered unsafe and unprofessional,” read the statement.

No kidding. 10 feet is an unprofessional distance, no matter how you look at it.

Additionally, Russian aircraft routinely fly with their transponders turned off. A transponders emitted signal helps the U.S. military identify the planes as Russian aircraft and turning them on is a normal part of the flight process. But President Vladimir Putin doesn’t necessarily feel Russian aircraft aren’t the only ones breaking the rules.

Back in July Russian President Putin had this to say about other NATO aircraft not having their transponders on: