The laser reflector is similar to RADAR, or SONAR, or whatever. Lasers are in the visible spectrum and, as has been said, remain focused for long distances.

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"Moreover, I am cognizant of the interrelatedness of all communities and states...Injustice anywhere is a threat to justice everywhere. We are caught in an inescapable network of mutuality, tied in a single garment of destiny. Whatever affects one directly, affects all indirectly. Never again can we afford to live with the narrow, provincial "outside agitator" idea. Anyone who lives inside the United States can never be considered an outsider anywhere within its bounds."



~Dr. Martin Luther King, Jr.