Hey there guys.
Yeah, it was an F-5 hitting an Il-76 in a parade commemorating the beginning of the Iran-Iraq war. And the guy in the movie doesn't say "s**t". He asks "Chie?" which is the informal form of "What is it?" in Persian.
And this whole thing was censored in Iran itself and none of the "official" news agencies, including the IRIB (the propaganda machine of the Islamic Republic), reported the event.