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Why ISIS's fake tanks and bearded mannequins won't fool US warplanes

isis wooden tank fake decoy
isis wooden tank fake decoy

(An Iraqi soldier stands beside a tank made of wood that was used by ISIS militants as a diversion tactic in Bawiza.REUTERS/Ari Jalal)

On Monday, a Reuters report detailed how ISIS constructed fake tanks, Humvees, and even put beards on mannequins in an attempt to stifle the US-led military coalition's bombing campaign against the terror group.

While the idea seems clever in theory, there's a major reason it won't present too much of a challenge to the US and allies: thermal imaging.

Wooden tanks and Humvees, no matter how realistically they're built or deployed, don't emit heat as a real vehicle would. The drones that circle the skies above ISIS's havens in Iraq and Syria have no trouble toggling between thermal and other types of imaging.

Watch the clip:

Here you see a drone observing a moving vehicle, the target. The video pauses quickly to show a red box around the incoming bomb. By the trajectory of the bomb, we can tell it came from another plane.

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The bomb obliterates the vehicle, and the drone, which observes in part to confirm the kill, toggles for a moment to thermal imaging.

The blast around the vehicle turns from gray to white as the camera displays heat instead of light. That's the problem ISIS's bearded mannequins can't overcome — they're cold.

However, decoys have long been used in war, and often to some effect. In World War II, both sides made extensive — and sometimes very effective — use of decoys. But that was before infrared imaging and advanced air forces took to the sky.

A tank made of wood that was used by Islamic State militants as a diversion tactic is seen in Bawiza, north of Mosul, Iraq November 13, 2016. REUTERS/Ari Jalal
A tank made of wood that was used by Islamic State militants as a diversion tactic is seen in Bawiza, north of Mosul, Iraq November 13, 2016. REUTERS/Ari Jalal

(Thomson Reuters)

More likely, the dummies would confuse the human intelligence of the US-led coalition against ISIS. Allies on the ground, like the Kurds or Iraqi forces, may scout locations, be fooled by the decoys, and report bad information back to the coalition. Additionally, analysts studying satellite and other traditional imaging may be fooled by the fakes.

It would take some time for the coalition to reconcile the difference between its satellite imagery, human intelligence, and thermal imaging from deployed drones, but it's not an insurmountable task.

In fact, Baghdad-based US Air Force Col. John Dorrian told Reuters that the coalition has been on to ISIS's decoy game for some time.

"We call it tactical deception. Daesh (ISIS) has been doing it, and that's certainly a tactic that enemies like to use," he said. "It is actually not as troubling as a lot of the other things we've seen," like the time ISIS burned down a chemical plant to spread a cloud of choking, corrosive gases so large that it was visible from space.

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