The theme song for the leaders of the Pacific Command and its Army, Air Force, Marine, and Navy components might well be country singer Willie Nelson’s catchy tune, “On the Road Again.”

For years, the commanders with headquarters in Hawaii have travelled extensively in the Asia-Pacific region to foster alliances and partnerships. Today, that duty has taken on fresh urgency with the Obama Administration’s “pivot” to give priority to security operations in this part of the world.

Moreover, because all U.S. military services have begun to experience reductions in forces and budgets mandated by the need to cut government spending, the U.S. must seek support from Asian nations to take up some of the slack.

And, although American officers don’t say much about it in public, they are increasingly in a competition with a rising China for influence in Asia. Longer term, Americans hope to deter a potentially aggressive China by cultivating working relations with other armed forces.

Admiral Samuel Locklear, the new Pacific commander, told Congress recently that “the Chinese and other people in that part of the world need to recognize that we do have US national security interests there.”

Secretary of Defense Leon Panetta underscored the mission of commanders in Hawaii during a stop here last week on the way to Singapore for the annual Shangri-la gathering of Asian defense ministers and military chiefs.

“More than ever,” Panetta said, “Hawaii remains that key center for operations throughout the Asia-Pacific region.”

Panetta, who was in Honolulu in March to preside over the change of command from Admiral Robert Willard to Admiral Locklear, said Willard had excelled as a diplomat who “demonstrated the power of relationships [and] how to turn those relationships into partnerships, into alliances, and ….true and lasting friendships.” He suggested that Admiral Locklear continue on the same course.

A particular responsibility for engaging Asian military leaders falls on the Army’s leader, Lt. Gen. Francis Wiercinski, because the army is the dominant military service in most Asian nations and an army officer is the chief of most of the Asian defense staffs.

So far this year, Wiercinski has visited Japan, Thailand, Indonesia, South Korea (twice) Bangladesh, Nepal, India, the Philippines, and Malaysia. At each stop, he typically met with the chief of defense and the head of the army plus the American ambassador and the defense attache in the Asian capital.

On these trips the general was sometimes invited to meet the defense minister or the nation’s political leader. In addition, he was asked to address a war college or to observe training. In March, Wiercinski also travelled to Washington, D.C., and Fort Knox, Kentucky. All told, he was in his office at Fort Shafter for only four hours that month.

Similarly, the commander of the Pacific Air Forces, Gen. Gary North, spends 60 percent to 70 percent of his time nurturing partnerships in the Asia-Pacific region. He meets with top officers in Asian air forces, senior defense officials, and some political leaders. Occasionally he is asked to meet with civic and business leaders.

The general flew to Mongolia to talk with military leaders and watch a parachute jump, to Vietnam to further the U.S. reconciliation with that one-time enemy, and received a visit from senior Thai officers at his headquarters in Hawaii. North took in a military air show in Singapore, dropped in the Pacific island nation of Palau, and attended another air show in New Zealand.

In the last six months, the commanding general of the Marines in the Pacific, Lt. Gen. Duane Thiessen, has spent more than half his time seeking to open Asian doors, arranging combined training with Asian armed forces, and occasionally representing the Pacific commander.

Thiessen has been in Japan for a seminar with Japan’s Ground Self-Defense Force leaders, Indonesia for an international dialogue, Singapore to meet with senior officers, and Thailand to assess the extensive Cobra Gold exercise. He went to Tonga to attend the funeral of King George Tupou V.

In East Timor, he met with leaders of the security forces. In Australia, he talked with civil and military leaders and inspected the first unit to land in Darwin under a new agreement to rotate Marines there. In the Philippines, he took part in an exercise with senior Philippine officers and checked on Balikatan, a U.S.-Philippine exercise.

Until he retired recently, Adm. Patrick Walsh, commander of the Pacific Fleet, travelled to Asia a bit less than the others, averaging a trip every other month. Said a staff officer: “The U.S. Navy maintains the largest and most robust presence in the Asia-Pacific region. Admiral Walsh thought it important to spend more time in Washington talking with Navy and Defense Department leaders.”

Walsh, however, spent a month in Japan in charge of the American relief effort after the earthquake, tsunami, and nuclear leak that caused so much death and damage in March 2011. His replacement at Pearl Harbor, Adm. Cecil Haney, said that “together with our allies and partners, we will continue our commitment to maritime security.”

These commanders are able to travel far because their aircraft can fly long distances and are equipped with superb communications to stay in touch with their headquarters and the Pentagon. They can send and receive secret and open messages, scrambled and open telephone calls, and use secret and open internet connections.

If they wanted to, they or the staffs traveling with them could even tune in to Willie Nelson strumming his guitar and singing: “And I can’t wait to get on the road again.”