The Fourth of July has probably been quite a day for San Diego’s Air and Space Museum and Education Center (SDASM), which encouraged visitors to come and honor “some of the greatest heroes in aerospace history.” What the museum really meant by the appeal is a mystery, but its Twitter account unexpectedly posted an image of six Soviet-built Su-25 Frogfoot jets trailing smoke in the white, blue and red of the Russian tricolor.

Su-25s are frequently employed to make flyovers during various celebrations across Russia, such as Victory Day or Independence Day – otherwise known as Russia Day – but they have seldom seen any action during American patriotic festivities.

Soon after the post went public, a massive ‘Twitterlanche’ ensued, with some eagle-eyed users informing the museum that they had mistaken the Russian tricolor for traditional red, white and blue colors of the American banner.