Russian fighter jets were caught escorting two nuclear-capable bombers off the coast of Alaska on Tuesday — marking the second such incident this month, according to US officials.

The planes were intercepted just west of the mainland by American F-22 “Raptor” fighters and positively identified by NORAD forces, officials said.

“The homeland is no longer a sanctuary and the ability to deter and defeat threats to our citizens, vital infrastructure, and national institutions starts with successfully detecting, tracking, and positively identifying aircraft of interest approaching US and Canadian airspace,” Gen. Terrence J. O’Shaughnessy, commander of NORAD, said in a statement.

“NORAD employs a layered defense network of radars, satellites, as well as fighters to identify aircraft and determine the appropriate response.”

The Russian military formation included two Tu-95 “Bear” bombers and a pair of Su-35 “Flanker” fighter jets, officials said.

“The Russian aircraft remained in international airspace and at no time did the aircraft enter United States or Canadian sovereign airspace,” NORAD said.

Tuesday’s flyby marks the third time this year that Russia has sent planes within a bird’s eye view of Alaska. The last interception came on Sept. 1 near the Aleutian Islands. A pair of Russian bombers was caught flying in the Alaskan Air Defense Identification Zone (ADIZ).

“Tu-95 MS strategic long-range bombers of the Russian Aerospace Forces performed scheduled flights over the neutral waters of the Arctic Ocean, the Bering Sea and the Sea of Okhotsk,” the Russian Defense ministry said in a statement to TASS. “At some stages of the route, the aircraft of Russia’s Aerospace Forces were escorted by two F-22 fighter jets of the US Air Force.”

The third flight was reported on May 11. In that incident, US officials said two Russian bombers and a TU-142 maritime surveillance plane were caught being escorted off Alaska’s western coast.

Footage posted by the Russia’s military on Wednesday showed fighter jets and two Tu-95 “Bear” bombers taking off from an airbase in eastern Russia. It’s unclear though if the video was filmed on Wednesday.