Revealing mistake: Towards the end of the movie, when Steve Austin is on fire during the fight, you can see it is a stunt man wearing a burn suit for a split second.
The Expendables (2010)
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Directed by: Sylvester Stallone
Starring: Sylvester Stallone, Jason Statham, Dolph Lundgren, Jet Li, Eric Roberts
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More mistakes in The Expendables
Pirate leader: Drop your guns!
Lee Christmas: Fat chance.
Barney Ross: Why do they always say that?
Trivia: Sylvester Stallone sustained 14 injuries during filming, including breaking a tooth, rupturing his ankle and getting a hairline fracture in his neck that required the surgical insertion of a metal plate. He even had bronchitis and shingles during the shoot.
Answer: The intel they gathered on Church made them believe he would have killed them all upon completion of their mission.
Phaneron