Fascinating listening for history buffs: The Secret Service has released a recording of communication among agents immediately after the assassination attempt on Ronald Reagan in 1981. As Marc Ambinder of the National Journal explains, it shows how agents initially declared that "Rawhide is OK," using Reagan's Secret Service nickname. Later, after an agent sees the president coughing up blood, the limo is redirected from the White House ("Crown") to George Washington Medical Center. "Fast." To hear the audio, go to National Journal. (More Ronald Reagan stories.)