HARRISBURG – U.S. and Commonwealth flags are flying at half-staff to honor former PA Gov. Dick Thornburgh. Thornburgh died Thursday at a retirement community outside Pittsburgh at the age of 88. Thornburgh, a Republican, built a reputation as a crime-busting federal prosecutor in Pittsburgh and won praise for his handling of the Three Mile Island partial nuclear meltdown in 1979. Thornburgh served two terms as governor from 1979 to 1987. He later served as U.S. Attorney General under Presidents Ronald Reagan and George Bush.