After the breakup of the Soviet Union in 1991, "Police Academy: Mission to Moscow" became the one of the first American movies to film in the formerly communist superpower. According to the Los Angeles Times, the cast and crew of the seventh and final entry in the "Police Academy" series filmed in Moscow for three weeks in late 1993 without incident or trouble ... until the post-Soviet power vacuum led to the military storming the Russian White House and TV Center.
During this period of violent unrest, "Mission to Moscow" temporarily shut down, and all 52 members of the cast and crew holed up in the government-owned Financial Academy Hotel. Unable to film an airport scene because of the military situation and subsequently declared state of emergency, the cast did what they needed to do at a hastily dressed studio. The situation improved enough for an outdoor shoot at a cemetery, although the filming coincided with burials of casualties of the unrest.
But then there's the time that Russian military officials rolled up on the film crew. According to "Mission to Moscow" DVD featurette "Underneath the Mission," Michael Winslow's wireless microphone picked up otherwise secret military communications, leading to a brief, tense, and ultimately smoothed-over standoff between the army and moviemakers.