WASHINGTON (AP) -- Barack Obama is considering former top military leaders among his possible running mates, according to a senator who met Tuesday with the Democratic presidential candidate's vice presidential vetting team. North Dakota Sen. Kent Conrad told The Associated Press said the team asked him about potential candidates from three broad categories _ current top elected officials, former top elected officials and former top military leaders. Conrad would not disclose which names they discussed, and the Obama campaign has been keeping the process a closely guarded secret. "We talked about many names," Conrad said, including "some that are out...