At the Central Intelligence Agency, it's known as "slow rolling." That's what agency officers sometimes do on politically sensitive assignments. They go through the motions; they pass cables back and forth; they take other jobs out of the danger zone; they cover their backsides...in the words of one veteran officer, "hit the agency like a car bomb in the driveway." President Obama promised CIA officers that they won't be prosecuted for carrying out lawful orders, but the people on the firing line don't believe him. They think the memos have opened a new season of investigation and retribution. The lesson...