A second Russian drone incursion led NATO to scramble aircraft on Friday, the same day the alliance announced a new quick-response effort, officials said Monday. A Rafale jet and a Polish helicopter responded to a drone over Romania on Sept. 12, marking the first action of the new Eastern Sentry effort, a press release said. The effort was unveiled by U.S. Air Force Gen. Alexus Grynkewich, NATO’s Supreme Allied Commander Europe. The new activity reflects an understanding of Russia’s broader drone-warfare tactics, a NATO official told Defense One on background. “It doesn’t just impact Allied Air Command, and it doesn’t just impact Allied Joint Force Command Brunssum, which leads integrated land command.