http://www.cnn.com/2004/TECH/space/05/07/laser.gun.ap/ Pics, videos, and general info. You can also read more about the THEL on page three of this pdf. It's an IR output that's about twice the longest wavelength visible to the human eye. But it actually ends up being visible because it heats airborne particulate detritus to incandescence, making the beam look like a three-foot shaft of glowing milky fog. It's really cool looking. I saw the MIRACL fire at the HELSTF in New Mexico in 1998. Of all the technologies covered by the BMDO optical intercept is probably the coolest. The Nautilus's kissing cousin, the Airborne Laser, has already taken to the sky (in 2003) and will perform its first scheduled intercept of an ICBM this fall. The particular niche this system will fill is artillery mitigation, both due to its short range (limited to about 2km because of atmospheric refraction of a high-power density) and the near-zero flight time of a beam of light. The engagement envelope time is so short that just one Nautilus point-defense laser could completely negate an entire 24-gun battery of tube artillery. Indirect fire may very well become a thing of the past shortly. For us, at least. Please Register or Log in to view the hidden image!