From "Sann on Sann":
+ [Sann] turned down a Washington call from a dear friend--ex-staffer, ex-colleague--because he was somewhat busy putting out an extra on the Puerto Rican hit squad which had just tried to assassinate Harry Truman at Blair House. He took the call when it turned out that his old buddy happened to be passing the scene of near-carnage and could furnish him, gratis, with an eyewitness account.