By AAMER MADHANI and PARKER PURIFOY, Associated Press WASHINGTON (AP) — A winter storm packing heavy snow blew into the nation's capital Monday, closing government offices and schools and grounding the president's helicopter as 6 to 11 inches (15 to 28 centimeters) of snow ringed the area around Washington. Snow spotters for the National Weather Service reported accumulations of 11.5 inches (29.2 centimeters)