On my way into work this morning, I spotted former U.S. Defense Secretary Donald Rumsfeld walking past FP's offices on Massachusetts Avenue here in Washington. Accompanied by what looked like a Secret Service escort, Rumsfeld was looking hale and smiling, though he was carrying a cane. "Hello, Mr. Secretary, how are you?" I asked him. "I'm good," he responded. I couldn't ascertain where he was headed -- AEI and Johns Hopkins SAIS are good bets, though, and he might have been leaving the Carnegie Endowment or Brookings.