Amelia -based First-Response Robotics produces agile, mobile robots that are special not only because they detect chemical and biological hazards, but because they can transmit their data and video live. The company's HERO � or Hazardous Environment Robot Observer -- is being used by authorities all across the country, leading to 2008 revenues of about $250,000. Customers include the U.S. Environmental Protection Agency, Federal Bureau of Investigation, and numerous law enforcement departments. A construction company has even been looking into using one of Cardarelli's robots to more safety and accurately make chalk lines for placing main support beams on high-rise buildings. Human error was 1/8 of an inch; HERO error was 1/16 in a test.