In the months after September 11, 2001, it was regularly said that “everything” had changed. It’s a claim long forgotten, buried in everyday American life. Still, if you think about it, in the decade-plus that followed -- the years of the PATRIOT Act, “enhanced interrogation techniques,” “black sites,” robot assassination campaigns, extraordinary renditions, the Abu Ghraib photos, the Global War on Terror, and the first cyberwar in history -- much did change in ways that should still stun us. Perhaps nothing changed more than the American national security state, which, spurred on by 9/11 and the open congressional purse strings that followed, grew in ways that would have been alien even at the height of the Cold War, when there was another giant, nuclear-armed imperial power on planet Earth.