Thus it is not hard to imagine the tall, lean, and plain-spoken retired admiral, who has been nominated by President-elect Barack Obama to be the nation's top intelligence officer, looking the president right in the eye during a crisis and delivering a candid report: "Mr. President, here are the facts as best we know them."

As director of National Intelligence and the president's principal adviser on intelligence, Blair would be responsible for setting objectives and standards for 16 disparate agencies such as the Central Intelligence Agency, the Defense Intelligence Agency and the National Security Agency, and for coordinating their sometimes conflicting operations.

Blair, who must be confirmed by the Senate, began his intelligence career as a young officer whose collateral duties included taking pictures of other nation's ships in ports his destroyer visited or encountered at sea. As a senior officer, he was an associate director of intelligence at the CIA, with a desk in the executive offices on the seventh floor at Langley, the agency's headquarters across the Potomac from Washington.

Blair's main link with intelligence, however, has been as a consumer. He absorbed intelligence on the staff of the National Security Council in the White House, as director of the Joint Staff in the Pentagon, and especially as commander of the Pacific Command. From the headquarters at Camp Smith, he ran the world's largest command with 300,000 people operating from the west coast of the U.S. to the east coast of Africa.

Blair's experience includes extensive exposure to Asia, having travelled widely as Pacific commander, and some to Europe as a member of the NSC staff. He majored in Russian studies as a Rhodes Scholar at Oxford University. He has had less contact with issues in the Middle East, Africa, and Latin America and will necessarily rely on others in those fields.

A recent essay Blair wrote for the National Bureau on Asian Research in Seattle provides clues to Blair's thinking on military power in Asia. "China, India, and Japan will not match the power projection capability of the U.S.," he wrote. Even so, they are "all developing the ability to deploy forces with the military capacity to threaten U.S. power projection task groups."

Blair asserted that "rather than initiating a scramble for power and influence in the region, the major nations in Asia seem more likely to use their power projection capabilities for symbolic purposes." He cautioned, however, "a scramble for power and influence among major Asian powers would be likely if a drawdown of the U.S. forward deployed military presence occurs in Asia."

After he took charge of the Pacific Command's headquarters at Camp Smith in Honolulu in 1999, Blair showed that he was a demanding, if quiet, taskmaster. Dissatisfied with the command's war plans, he ordered them updated to account for China's acquisition of modern Russian warplanes and ships.

"That was laborious stuff," said one officer. "It took thousands of man-hours. Some of the staff had to work so hard they started calling it the 'Blair Witch Project,' " the name of a popular horror movie. Blair retired from the Navy in 2002.

In contrast, even though he is considered by some to be an intense, aloof workaholic, Blair has occasionally shown a playful streak. As captain of the destroyer Cochrane, with home port in Japan, he tried to water ski behind the ship after she had been at sea for many weeks. Blair has told friends he thought the crew needed a bit of entertainment.

Blair went over the side and was fed a rope by the crew of a gig, or small boat, then got into position aft of the ship to be pulled up on the water skis. When the destroyer started to speed, however, the sea was rough and Blair lost control. He went head over teakettle into the ocean, much to the glee of the sailors gathered on the fantail to see their skipper dunked.

Richard Halloran is a Honolulu-based journalist and former New York Times correspondent in Asia.