Not technically military technology yet, but one imagines that the DOD will take an interest relatively soon:

A strange new material has taken scientists one-step closer to a Star Trek-styled cloaking device. The new substance is a "metamaterial" that negatively refracts light. Metamaterials with this property raise the theoretical possibility that light could bend completely around an object, making it effectively invisible. Scientists are awed by the implications of metamaterials.

"These materials would comprise a complete -- almost magical -- mastery over light," said David Schurig, an assistant professor of electrical and computer engineering at North Carolina State University, who did not participate in the new research. "They would enable not just invisibility cloaking, but arbitrary control over the richest information channel humans employ. One thing I know for sure, it will happen sometime between now and the technological singularity."... The new material, developed by a Princeton-based research team, is the next step in putting those models to work in the part of the spectrum we can see... "An optical cloak could eventually be built that would work through the full range of frequencies," said Willie Padilla, a Boston College physics professor.

This will be important when we have to hide from the monkeys. Not that this will stop their Screech Weapons or the Pain Sticks of their robot allies - but at least this will keep you and your family out of the salt mines for another couple of days.

References:
* New 'Metamaterial' Brings Scientists Closer Than Ever to a Cloaking Device [Wired]
* Today In We're All Totally Boned - Marauding Monkeys Attack, Murder Anti-Monkey Politician In His Home

Previously:
* Thursday Impending Robotic Tyranny - Cute Yellow Blob Edition
* Thursday Military Tech - The Totally Awesome Israeli Jets Of Operation Orchard
* Thursday Military Tech - Zionist Robo-Snipers