The Defense Advanced Research Agency (www.darpa.mil) has launched the Optical and Radio Frequency Combined Link Experiment program to develop a prototype system that combines free space optical and RF communications into a single networked system for the military. The program's first phase will set up a prototype system and flight demonstrations, or hybrid free space optical RF air-to-air-to-surface links. Key participants of the program include Lockheed Martin (www.lockheedmartin.com), ITT Industries (www.ittind.com), and L-3 Communications Corp. (www.apcominc.com).
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
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