Engineers from the National Institute of Standards and Technology are studying ways to help improve radio communications for first responders inside buildings. A research team from the NIST laboratories in Boulder, Colo., spent a week in the Washington area last month, radio mapping large buildings and planting transmitters in the old Washington Convention Center before its implosion. The two-year program, funded by the Justice and Homeland Security departments, has found that radio waves behave in unpredictable ways inside buildings, both intact and demolished. Full Story