Read this fascinating story from The New York Times on the D.C. Fire Department’s Engine Company 10, by all accounts the busiest firehouse in the country. These Trinidad firefighters at the “House of Pain” spend most of their time not fighting fires, but rather serving as emergency medical responders.About 80 percent of the calls handled by Engine Company 10 are medical emergencies because the firehouse serves one of the city’s poorest areas, where few…