 Our nation's capital, and we're brought to you this time around on WTOP by Lynn the Plumber Heating and Air. Trusted, save day service, seven days a week. Check them out. Lynn the Plumber Heating and Air, coming right up this half hour on WTOP Tuesday morning. Finding out if anyone actually knows what the heat index means at Tyson's Corner Center, I'm Scott Gelman. It's reached a boiling point.