Revealing mistake: When Wendy is going to look for her boyfriend Steve and sees the blood dripping from the air duct, she reaches up towards it and you can see there is a spot of dried prop blood on her arm that's been partly wiped off before her hand ever comes in contact with the blood. (00:43:55)
Revealing mistake: After the zombies get loose inside the compound and attack the civilian sector, a woman in a blue bandanna gets jumped and pulled down behind a counter and killed. A blood spurt flies up to signify she's been bitten, however the splash of blood comes from in front of the counter. (01:16:00)
Revealing mistake: Baca is using a pistol to shoot the zombies towards the end and still has this same pistol at the end. When he's on the ground about to shoot himself to stop from turning, it shows a close up of his pistol which reveals it's a 6mm BB gun. (01:20:15)
