During the air strike the aircraft flown change between French made Dassault Mirage III and American F-4 Phantom II:s and back again repeatedly. The first plane to attack, in Viet Nam era camouflage, is an American F-111 Swing Wing Aardvark. It's very apparent at the 1:29:26 mark and is seen twice more after that.
When Griff, armed with Red's automatic rifle, is trapped by Jennifer and Thatcher, Thatcher fires at him shoots the same branch twice.
When Paul is running after Chris by the ocean, his uniform is mostly dry, only wet in patches where it touches the water. However, less than a minute ago he was fighting with the chief guard in the lake, getting wet throughout.
When Chris cuts Ritter's hands off, traumatically amputating both of them, even though there are several arteries and veins in the stumps, other than blood on the stumps, there's no blood spurting out them at all. This is an impossibility. As long as Ritter's heart was flowing, blood would have initially shot out of the stumps slowing as his heart stopped.
After Ritter gets his hand's cut off by Chris and he finally collapses, look carefully at the stumps. His hands can be seen under them.
When Alph is beating up Dodge, slamming him to the ground, you can clearly see the sides of a foam mat when Dodge hits the floor and bounces up.
Stage hand visible fanning flames during the final tracking shot of the brushfire (2.35:1 version only).