Goofs

When Dr. Bracket is shown pictures from the previous Predator encounters, the image from Predator 2 is dated as being from 1990 (when the movie was released) but the year should read 1997 as stated moments earlier by Traeger.

When Rory is in the athletic field petting the bulldog, he was wearing the gauntlet on his left arm. Once scene he was wearing it on his left, the scene switches its on his right arm, the scene switches again and it is once more on his left arm. Addition: You can easily tell by the direction of his hair that the image has been flipped.

Quinn goes back to his son's house saying he knew where the Predator was heading to get the gear back. Yet, he is shocked that the package showed up at the house saying he had used a PO Box to ensure he did not endanger his family.

Towards the last section of the movie, Nettles clothing keeps changing. One minute he has a red checkered shirt on, the next time he has a brown combat shirt on. This wardrobe mismatch goes back and forth numerous times.

When they shoot at the Predator on the tree after saying 'light it up' the gauntlet quickly changes to the right arm and back.

Nebraska would not be allowed to wear earrings if he were a military prisoner.

The Veterans Administration would have no legal authority to transport former service members in handcuffs. In fact, they couldn't even transport them against their will without them being adjudicated to mentally unsound by a court of law. The commitment process at the VA is voluntary for the majority of patients and would thus not involved restraint using handcuffs.

Former military members cannot restrained by the VA unless they are proven to be. danger to themselves or others. Even then, they would not be moved to a new facility by a converted prison transport bus. They would be transported by ambulances and using stretchers.

At the end, McKenna is seen wearing his dress uniform. He is wearing a Ranger Beret (tan) with no unit insignia device, just a flash patch. His blue infantry cord is buttoned on top of the epaulette, instead of under it so that the attachment cord is not visible. He wears no shoulder patch to show either his current unit (left shoulder) or a combat unit (right shoulder) which he should have since his wife said he was a combat veteran with 13 kills.

If the military was going to interrogate a prisoner, they would not do so in the Veterans Administration hospital.

Besides the VA being a completely different department in the Executive Branch of the US government, it wouldn't have the necessary facilities to either restrain, nor to interrogate, a currently serving military member.

The military would have used a clinic or hospital on a military installation as they could "lock it down" and they would be able to hold a military prisoner there.

Quinn had the Predator's recovered gear sent to his PO Box to avoid endangering his family. However, the mailman who delivers the parcel to Rory says it was instead sent to his house as his PO Box payments are past due. Mail that is sent to a PO Box that's not renewed is returned to the sender after 10 days, no forwarding order. The sender can actually file a forwarding order to have the mail redirected elsewhere, if the parcel can't be delivered to the PO Box for whatever reason. However, judging by Quinn's reaction upon finding out that the gear was instead sent to his house, he never filed a forwarding order, which he would not have done as he didn't want to endanger his family. This also brings up the question on how he knew that the parcel was redirected to his house, he had no way of knowing that at the time.

Casey tells Nebraska that the galaxy is bigger than the universe, when in fact the universe is filled with untold numbers of galaxies. This is not what Casey says. At around 1h 11m, the actual exchange is:

Casey: It's a Chinese menu of DNA, comprised of the deadliest species in the entire...

Nebraska: In the entire universe, yeah?

Casey: Galaxy.

Nebraska: What?

Casey: Galaxy. 250 billion stars. Why go universe? Just saying.

Casey's clear meaning is that the galaxy is certainly big enough, no need to go the entire universe.

The Upgrade Predator sees in infrared and has a HUD display for his vision, despite the fact he doesn't wear a mask at all. His vision should be all red as seen in the 1st installment and the 3rd installment when a Predator doesn't wear his mask. However, the infrared heat POV can been seen without his mask due to his inbuilt biotech/bio-metric enhancements.

When Nettles (the helicopter pilot) is introduced it specifically stated that he "flew Hueys for three tours over there." This would be more than a little difficult as the UH-1 "Huey" helicopter was removed from flight service by the US Army in 1984 when it was replaced by the UH-60 Blackhawk.

While some National Guard units continued to fly the Huey for many years, by the time of the Third Gulf War, Hueys were no longer used in front line engagements. There would be no way that Nettles would flown for three tours, or any at all in time for him to have returned to the US as a burned out pilot.

Throughout the film, "Nebraska" has a lit cigarette on his mouth almost all of the time. However, he is never shown actually taking a deep inhale of any cigarette; at most, he might "puff" on one as if it were a cigar.

Vehicles with Georgia state license plates on the front are seen in the film. The state of Georgia has not required front license plates since September 2009.

When Nebraska introduces Lynch, he states he got a medal for "blowing up half of a mountain in Mosul." There are no mountains in Mosul, Iraq. Military veterans that were deployed to northern Iraq, specifically the city of Mosul, would know this. The closest mountainous terrain is over 60 kilometers to the north, beyond the town of Alqosh and village of Bozan.

The first Predator in the movie comes to Earth to deliver a weapon for Humans to defend themselves. It then goes on to kill almost every Human it comes in contact with and makes no attempt at communication.

None of the "Loonies" as McKenna calls them, leave the base with any weapons other than the shotgun taken from the guards. But arriving at the school, they have at least three or four military arms restricted from private ownership: automatic rifles, a sub-machine gun, and a rotary grenade launcher, plus all the ammo to make them useful.

Before entering the examination room with the captured Predator, everyone is required to go through a thorough decontamination process to avoid carrying anything in or out of the the space. However, no one in the examination room is wearing any kind of face covering. Certainly scientists in such a facility would know that the human mouth and circulatory system are some of the greatest conveyors of bacteria and viruses in the world.

Casey is a biologist. She would never say "It grew an exoskeleton under its skin" as an exoskeleton, by definition, is outside the body. A biologist would know that.

A biologist like Casey would never say that the Super Predator is evolving in comparison to the rest of his kind. Evolution occurs to an entire species due to environmental factors while a single member of a species (such as the Super Predator) would be metamorphosing. To say the Super Predator is "evolving" is scientifically illiterate.

When at the motel, Quinn asks if Casey will be safe with the two in the room, to which Nebraska states "They're soldiers, man"; given that himself, Baxley and Coyle were Marines, he would have addressed them as Marines, not soldiers.

In the opening moments of the film, Captain McKenna (in his sniper gear) makes a remark about his team betting on whether or not the 2 hostages will show up or not. His team confirms this. McKenna then says, "Copy that; Im in for 20"; however, he doesn't clarify what he is betting on, In other words, he doesn't state whether he is betting that they will show up it they wont show up. This is obviously an error by the Captain.