I spent about seven years during the Vietnam War flight-testing airplanes for the Air Force. And then I went in and I had a lot of fun building airplanes that people could build in their garages. And some 3,000 of those are flying. Of course, one of them is around-the-world Voyager.

As a little kid in the late 1960s, I was afraid of the world. Even if I didn't get caught in the draft that was sending American teenagers to Vietnam, there was always the possibility of a Soviet nuclear attack. I made constant escape plans and imagined a life going from port to port.

The Republican Party of Richard Nixon was called to power in 1968 to bring an honorable end to the war in Vietnam and restore law and order to campuses and cities convulsed by crime, riots and racial violence. Nixon appeared to have succeeded and was rewarded with a 49-state landslide.

But, you know, I just did a big trip in the spring to Vietnam and Cambodia and Thailand, and that's when I bought a Kindle. I have like 15 books on this one little gizmo. But when I came home, the first night I picked up the book that was on my nightstand and I went right back to that.

Let me make my point about Vietnam. When the Nixon initiation came into office, there were 550,000 Americans in combat. And ending the war was not a question of turning off a television channel. And so, debating on how we got there and what judgments were made was not going to help us.

I fought as an infantry Marine on one of the Vietnam War's harshest battlefields. After leaving the Marine Corps, I studied law and found a fulfilling career as an author and journalist. But again and again, I came back to the personal fulfillment that can only come from public service.

America owed its military renaissance in the 1980s and 1990s to Vietnam. Veterans like Norman Schwartzkopf, Colin Powell, Alfred Grey, Charles Krulak, and Wesley Clark returned home angry and ashamed at their defeat and rebuilt all-volunteer, professional armed forces from the ground up.

In the late Fifties and early Sixties, opposition to state terror and aggression and torture and so on was zero. That was a horrible time: the massive Kennedy terror operation against Cuba, the first attacks on Vietnam in 1962, the imposition of national security states in South America.

Many young men in the 1960s and 1970s came to reject some of the traditional ideas about manhood that many of their fathers tried to pass down - like unquestioning respect for authority even when that might mean killing and dying for questionable or unjust causes such as the Vietnam War.

Lincoln made mistakes. Roosevelt made mistakes. Eisenhower made mistakes. The Battle of the Bulge was the biggest intelligence failure in American military history, much bigger than any in Vietnam or now. We didn't know that the Soviets were moving 400,000 or 500,000 troops. We missed it.

My mom is a nurse; my dad is a pediatrician. They were born in the 1940s, and they were both inspired to fight against injustice, whether it was the injustices of the Vietnam War or Watergate or children in poverty or oppression of African Americans in Philadelphia where I was growing up.

As many people have chronicled, the decision to fight in Vietnam was a years-long accretion of step-by-step choices, each of which could be rationalized at the time. Invading Iraq was an unforced, unnecessary decision to risk everything on a 'war of choice' whose costs we are still paying.

When downed American pilots were first taken prisoner in North Vietnam in 1964, U.S. policy became pretty much to ignore them - part and parcel of President Lyndon B. Johnson's determination to keep the costs of his increasingly futile military escalation in Southeast Asia from the public.

Today, war of necessity is used by critics of military action to describe unavoidable response to an attack like that on Pearl Harbor that led to our prompt, official declaration of war, while they characterize as unwise wars of choice the wars in Korea, Vietnam and the current war in Iraq.

I was 20, and my reality was that people either went to college full-time, or they were draftable. The dear friends that I went to high school with that didn't go to college eventually wound up in Vietnam, and I noticed that they came home different. I was in Ohio during the Vietnam War era.

For many Americans, 'Vietnam' is a word associated with war and the extraordinarily complex history between our countries. But since normalization began, the U.S. and Vietnam have steadily built bonds of partnership, demonstrating that we can recognize history without being imprisoned by it.

A photograph can make you feel so many different things. When you look at war photographs of Vietnam, or something similar, it makes you feel anguish and sadness and pain. Then in other moments, when you look at Jackie Kennedy walking down Fifth Avenue, that makes you feel glory and richness.

The POW camps of North Vietnam were packed with Air Force and Naval Academy graduates. The six midshipmen in my Naval Academy class of 1968 who served as liaisons between the Marine Corps and the Brigade of Midshipmen later suffered nine Purple Hearts in Vietnam, and one man killed in action.

Think about this - some of us actively fighting to remove Saddam Hussein don't agree with the cause themselves, but they're doing their duty. And it is our duty as loyal Americans to shut up once the fighting begins, unless - unless facts prove the operation wrong, as was the case in Vietnam.

I went to Vietnam during the Vietnam War to visit all the troops. We would fly into a hospital and serve mess to the guys, and we ate whatever they were eating. Then we slept there and flew out the next day to little bases where there were maybe 10 or 20 guys. Then we flew to another hospital.

Desert Storm created the pattern for the American way of war that eventually prevailed in Kosovo. America learned from Vietnam that unilateral use of force eventually forfeits international legitimacy and domestic support. Desert Storm demonstrated the political necessity of coalition warfare.

You've gotta be careful. People don't want to be reminded of Vietnam and Korea. We lost thousands of fine young men and didn't win either of those wars. Nobody wants to hear about them. 'Apocalypse Now' and 'The Deerhunter' weren't box-office hits.There was too much violence and blood and gore.

In the seventies, a group of American artists seized the means not of production but of reproduction. They tore apart visual culture at a time of no money, no market, and no one paying attention except other artists. Vietnam and Watergate had happened; everything in America was being questioned.

My own life changed when my father returned from his second combat tour in Vietnam. When he came home after almost a year in Army hospitals, he weighed less than half of what he did when he left. I watched the agonizing recovery, and that experience was on my mind when I was asked to come to VA.

With respect to where we are now, we have a voluntary army. And if we ever go back to conscription I hope that at time it will be the kind of conscription that was put in at the end of the Vietnam War. And that is, everybody is equally liable to be called to serve the nation in time of conflict.

In the '60s we fought for peace, when the Vietnam war was on. We were against the cops and against the politicians, and there was a lot of waving banners and all that. And I think in a way, just as they were enjoying that machoism of war, we were enjoying the machismo of being anti-war, you know?

I was in Vietnam, and I was exposed to Agent Orange. And there's a high relationship between people that were exposed to Agent Orange and the kind of lymphoma that I had. The prostate cancer was genetic in my family. My father had prostate cancer, my - three of my four uncles had prostate cancer.

What some people argue is that Vietnam stands for the proposition that there's no role for American power anywhere on earth. I don't believe that's the case at all. I think we're the strongest force for democracy and for stability on earth, and we must have a strong capacity to perform that role.

The war on terror is the most insane and immoral war of all time. The Americans are doing what they did in Vietnam, bombing villages. But how can a civilised nation do this? How can you can eliminate suspects, their wives, their children, their families, their neighbours? How can you justify this?

I've been to Vietnam and mainland China. Even though the Vietnamese are seemingly poor, they always stop in front of red traffic lights and walk in front of green ones. Even though mainland China's GDP is higher than that of Vietnam, if you ask me about culture, the Vietnamese culture is superior.

Lyndon Johnson is not a comfortable model for President Obama to imitate. He is an all-but-forgotten president - pilloried for the failed war in Vietnam and criticized for grandiose reforms conservatives denounce as the epitome of federal social engineering that costs too much and does too little.

Much of the conventional wisdom associated with Vietnam was highly inaccurate. Far from an inevitable result of the imperative to contain communism, the war was only made possible through lies and deceptions aimed at the American public, Congress, and members of Lyndon Johnson's own administration.

As for Vietnam, what matters is that Kennedy successfully resisted pressure to send anything more than military advisers, a stance that was a likely prelude to complete withdrawal from the conflict. There is solid evidence of his eagerness to end America's military role in that country's civil war.

I had a very strong feeling about the Vietnam War, and I had a strong feeling about participating in it. The military draft was in place, I was summoned for a physical exam, and I was either going to be classified as fit for military service or make my objection to it. So I made my objection to it.

All at once, funding was gone due to the Mansfield Amendment, which was a reaction to the Vietnam War. In the minds of the local RLE administrators, research in gravitation and cosmology was not in the military's interest, and support was given to solid-state physics, which was deemed more relevant.

Truman fired the popular Gen. Douglas MacArthur because he disobeyed orders in the Korean War. Johnson knew that he had reached the endgame in Vietnam when Gen. William Westmoreland, the top commander in Vietnam, requested 240,000 more troops in 1968 for the prolonged war that also could not be won.

I've always been interested in Vietnam, feel it's a seminal event in our nation's history, and have explored it over the years - but I hadn't been interested in doing a documentary about it. I felt there had been a lot done about Vietnam, and didn't know if I could add anything new to the discussion.

In particular, Kissinger was a key player during a transformative period of the imperial presidency, in the 1960s and '70s, when the Vietnam War undermined the traditional foundations on which it had stood since the early years of the Cold War: elite planning, bipartisan consensus, and public support.

Think about it: Venezuela, Cuba, Nicaragua, Vietnam, North Korea, the former Soviet Union - they all start with the intention of leveling the playing field - or making things better for the little guy - and instead, they created misery, poverty, destruction and a permanent ruling class of bureaucrats.

I say openly that I am an anti-war person, with the point being, show me some reason not to be against this war. You have to be sort of asleep at the switch not to be critical of it. And the parallel between one quagmire we went through in Vietnam and the one we're in now is clear for everybody to see.

For me, the passing of time has provided me with subjects I never had before. Subjects I can now look at from a historical perspective. Like the anti-communist era in America. I lived through that. I was a boy; I didn't find a way to write about it until many years later. The same with the Vietnam War.

Vietnam was the defining event for my generation. It spilled over into all facets of American life - into music, into the pulpits, in churches of our country. It spilled over into the city streets, police forces. And even if you were born late in the generation, Vietnam was still part of your childhood.

My mother tried really hard to protect us, but occasionally, after afternoon cartoons of whatever was on... the nightly news would come on, and I'd see footage from the war zone, and I would hear the word 'Vietnam,' and I would know my dad was over there, and it was a very frightening experience for me.

There are two types of courage involved with what I did. When it comes to picking up a rifle, millions of people are capable of doing that, as we see in Iraq or Vietnam. But when it comes to risking their careers, or risking being invited to lunch by the establishment, it turns out that's remarkably rare.

My father wanted to be a hero. He went to the Air Force Academy, was valedictorian, and then he found himself strafing villagers in Vietnam in a war he didn't want to be in and didn't understand. He was extremely conflicted about the line where he went from being the good guy to possibly being the bad guy.

My film isn't about Vietnam. It is Vietnam. It's what it was really like. It was crazy. And the way we made it was very much like the way the Americans were in Vietnam. We were in the jungle, there were too many of us, we had access to too much money, too much equipment and little by little we went insane.

The casualties in the Civil War amount to more than all other wars - all other American wars combined. More people died in that war than World War II, World War I, Vietnam, etc. And that was a war for white supremacy. It was a war to erect a state in which the basis of it was the enslavement of black people.

We talk about how hard it is now. But if we look back at the '60s, we actually had a president that was assassinated. We had riots, we had Vietnam, Martin Luther King, Malcolm X, the FBI, and the Black Panther war. There was so much happening at the time where it felt like America was coming apart at the seams.

From the time I left the Marine Corps after serving as an infantry platoon and company commander in Vietnam, I decided that I would focus on immediate goals that inspired me to devote all of my energy to them, rather than putting together the more cautious and traditional building blocks of a predictable career.

Within days of Richard Nixon's inauguration in January 1969, national-security adviser Kissinger asked the Pentagon to lay out his bombing options in Indochina. The previous president, Lyndon Baines Johnson, had suspended his own bombing campaign against North Vietnam in hopes of negotiating a broader cease-fire.

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