They have that quantum stealth camo sheet already and had it for awhile now since they started the future land warrior program.
And
Unfortunatly;
The company behind the first video (showing the girl behind the metamaterial sheet) is a mockup of how the technology would 'theoretically' look (so basically they are fake). We don't even know what it will look like (especially when moving etc). And since releasing the pics/videos (in 2012) the company has not demonstrated/showed that they have progressed with making the tech (so the videos were more to get attention from investors, probably)
The second video is just a video artifact and not a stealth suit (the US soldier is dressed normally). The 'invisibility' effect is probably being caused by a monstrous heat wave (common in Iraq) between the camera and those soldiers around the tank. The effect is compound because the soldier is running fast ..If you look closely at the video (after the 'stealth' soldier gets on the tank *highlighted by red circle*) another soldier moves around to the front of the tank before turning and running back around the tank himself. As the soldier does this the heat haze causes HIM to disappear too (something the video doesn't point out). This second incidence occurs at 0:28 secs into the video (in fact there is a 'vapor trail' effect seen as well at 0:29). This shows its a camera artifact issue of some kind ..i doubt those insurgents cared much for those video recorders
Sadly it is a case of chasing ghosts
One of the things about funding stealth tech that i'm sure the military think:
You spend all that money trying to be invisible in the day ..when its easier and cheaper to simply conduct a mission at night
and, going forwards augment the stealth tech there (making it harder to see you at night).
Plus, if you've ever seen a sniper (who is a master of the ghillie suit) they practically already ARE invisible
The metamaterial concept is sound, I believe. Though what it would actually look/act like is still up for conjecture. And, the funding needed to even create a prototype is obviously pretty high i believe (as would be the cost of production for the future, due to the complexity of producing it)
