Revealing mistake: While everyone is pinned down, when Jothee shows up in the stolen Scarran ship and fires on the enemy, in the overhead shot we can see the special effects canisters that cause the explosions on the ground.
Revealing mistake: When John uses Scorpius as a shield and takes cover in front of him, as John fires at the Tregans behind Scorpius, there are round black devices attached to the back of Scorpius' suit that are there for the gunfire special effects, which suddenly appear then disappear after.
