At least two civilians have been injured in a bombing incident during Russia’s war games on Monday. Videos of the incident have been posted to YouTube and appear to show two helicopters firing at a civilian viewing area. Russian media report that the incident is being investigated by the military. The war exercises, called “Zapad-2017″ or “West 2017,” are believed to be the largest show of military strength by Russia since the fall of the Soviet Union. And the war games come amid heightened tensions with the United States as the world is now operating much more like the Cold War, a period ostensibly ended in 1991. The helicopter attack that left at least two hurt took place at a test site near Luga, the same one that Vladimir Putin himself was at just yesterday to observe the war games. Luga is roughly 70 miles from Russia’s border with Estonia, a member of NATO.