Factual error: After they order the Ohio class submarine to nuke at the piranhas, they show a scene were the submarine launches a torpedo that explodes with a large flash like a nuclear explosion. In a scene before that, they say it is armed with a 20 kiloton nuclear device. However, the US Navy had only one nuclear tipped type of torpedo, the Mk 45. They were decommissioned in 1976. Also, it used an 11 kiloton warhead.
Factual error: The movie takes place in Venezuela. Throughout the movie the Venezuelan army flies US-made UH-60 Blackhawk helicopters. However the Venezuelan army does not fly these, nor can they purchase them, since Venezuela is boycotted by the US.
