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In some tests , power levels exceeded the FCC limits on consumer devices , but Ely says the devices could cause interference at much lower levels , depending on the layout of the airplane and the frequencies used . The Los Angeles Police Department Experience " made a strong case for the taser , stating that field tests proved the device could " immediately incapacitate " even violent suspects under the influence of mind-altering drugs.6 The author asserted that speculation that the taser can induce a heart attack or cause burns is " based upon the human fear of electricity . North spent the past two summers as an intern at the Pennsylvania Department of Transportation 's District 11 headquarters in Uniontown , Pa ., and part of the January interim session shadowing a civil engineer in the scheduling department of Dick Corp. in Pittsburgh , Pa. North says that observing how engineers in that department use project-planning software in personal digital assistants helped her visualize how the devices could be used in the field . An exhibit at the Tech Museum of Innovation in San Jose , Calif ., features an ultrasonic drill developed by JPL senior research scientist Dr. Yoseph Bar-Cohen and Cybersonics , Inc. During future space missions , the device could extract samples using lightweight landers with robotic arms and small rovers that roam the surface of an asteroid or planet . The manufacturer claims that several small studies proved that even lay rescuers unfamiliar with the device could use it correctly in an emergency . " The petitioners fail to show that the devices could not have been designed to meet FCC rules , the League said , adding that it appears the lower cost of manufacturing analog devices is apparently the reason why they're seeking the waivers . Convinced that the device could put their side company on the map , both men use themselves as guinea pigs to test the machine 's capabilities . He shouted to Bara to get him a bucket of water so that the device could be washed out of the pipe . Since the body 's immune system produces minute amounts of antibodies in response to diseases such as cancer , the devices could be used for early diagnoses .