The FAA changed its mind last week and refused a developer’s request to erect a number of wind turbines in the Erie, Pa. area, claiming they will interfere with radar in use at an ATC tower near the city. The agency had earlier decided the turbines would not be an issue for the airport. This decision has also found its way into a debate about the construction of wind turbines in Somerset, Md., amid concerns those units could interfere with flight-testing radar at nearby Naval Air Station Patuxent River.