U.S. commandos missed with their first shot at Osama bin Laden, when the world’s most wanted man poked his head out of a third-floor room to see what was headed his way, according to U.S. Sen. Saxby Chambliss, the ranking Republican on the Senate Intelligence Committee. Bin Laden ducked back in, and the Navy SEALS quickly followed and finished the job, Chambliss said in a telephone interview this afternoon. The missed shot was a new detail in the emerging story of the 40-minute raid on the Abbottabad compound in Pakistan. Chambliss also said commandos found a pistol and AK-47 in...