Pennsylvania was one of the founding states of the United States of America. The former British colony joined the union in 1787 as the second colony to ratify the U.S. Constitution. On Doomsday its two largest cities - Philadelphia and Pittsburgh, along with towns and suburbs in their vicinity - were destroyed by Soviet nuclear strikes. Also destroyed by direct hits were the state capital of Harrisburg, and the cities of Bethlehem, Erie, Scranton, and Wilkes-Barre. Allentown was severely damaged by the strike on Bethlehem and abandoned by survivors who fled west and southwest toward Reading. Waynesboro was also damaged due to the strikes on Camp David and the Raven Rock Mountain Complex. Willow Grove had to be abandoned due to the strike on Naval Air Station Joint Reserve Base Willow Grove