Word: radar
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...week that he fails. After an exhaustive basic proficiency test, he enters a second eight-week period called Advanced Individual Training. During AIT, the recruit learns further skills based on his aptitude and interests, finally qualifies in one of 950 Military Occupation Specialties ranging from "creepy-peepy" (battlefield radar) to computers (by which warehouse sergeants now tot up rations). In all, today's soldier gets four months' training v. eight to twelve weeks in World War II, and in subjects unimaginable only a few years...
Fidel Castro's Communist dictatorship fairly bristles with coastal emplacements, sea-scanning radar, patrolling helicopters and 45-m.p.h. komar-class Soviet torpedo boats. Yet whenever the mosquito navy of the anti-Castro exiles buzzes up to bite away at fortress Cuba, as it did in Havana harbor last week, the recruits behind Castro's hardware curiously seem to be looking the other...
Despite AMU's elaborate controls, maneuvering in space without the radar and computer guidance available in full-size spacecraft-called "eyeballing" by astronauts-can be both difficult and dangerous...
Sophisticated Conjecture. Such lunar theorizing is based largely on earthly experience. Barringer has already designed effective radar systems to measure the thickness of antarctic ice, which is largely transparent to many low-frequency radars and radio altimeters, a phenomenon that results in incorrect altitude readings and has caused several plane crashes. Barringer is also conducting laboratory experiments for NASA to study the possibility of designing a radar system that would measure the thickness of the moon's surface layer from an orbiting vehicle. He has bounced radar pulses off simulated lunar crusts made of porous lava and compressed lava...
Scientists at both NASA and Caltech's Jet Propulsion Laboratory, which is building Surveyor, the first U.S. lunar soft-landing vehicle, remain skeptical of Barringer's theory. They say it is still largely conjecture. But it is conjecture that has made the problems of radar transparency a vital concern in the design of a sophisticated Surveyor altimeter that should have no trouble distinguishing the true surface of the moon...