What is the Air National Guard?

According to news and Congressional sources, the first unit over New York after the attacks began was the 102nd Fighter Wing of the Massachusetts Air National Guard. The F-15's were stationed at Otis Air National Guard Base, Cape Cod, Massachusetts. On May 22, 2002 a Joint Resolution was passed by the Congress of the United States recognizing the members of the 102 FW for their actions on September 11, 2001.