After 44 years in journalism, I don’t get angry very often about the dirty tricks that so often besmirch the American political process.

But I am angry about the Valerie Plame affair, a sordid tale that flared anew this week when President George Bush commuted the prison sentence of Lewis “Scooter” Libby.

I am not angry at the commutation or the pettifogging partisan exchanges it spawned. I am angry at the underlying event – the fact that an American patriot whose only crime was to serve her country in a dangerous and honorable profession had her mission undercut for partisan political purposes.

I am even angrier that the vicious “outing” of Valerie Plame put her sources at risk – the men and women in foreign countries who had risked their own lives to help America in our war on terror.

In the intelligence trade, such foreign sources are called “assets.” I call them heroes. And they are the ones who were put most at risk after columnist Robert Novak revealed Plame’s CIA connection as part of a clumsy Bush administration effort to discredit her husband, former Ambassador Joseph Wilson, who had become a critic of the Iraq war.

To explain why this case angers me so deeply, let me give you a number: RA68031300. It identifies me as a Vietnam-era veteran of the United States Army. After enlisting, I took basic training at Fort Leonard Wood, Mo., where I received orders sending me to Fort Sill, Okla., for training in artillery, after which I expected to be sent to Vietnam.

Because someone in the Pentagon noticed I had worked for United Press International, I was called out on my last day of basic and redirected to the U.S. Military Academy at West Point. I ultimately became editor of the post newspaper, the Pointer View.

So in the end, my personal risk in my military career was limited to some really awful haircuts. But the names of 58,000 of my comrades engraved on a wall in Washington, D.C., prove that my story could have ended differently. Those names also explain why I will never forgive anyone who willfully puts the lives of America’s military or intelligence personnel or our friends abroad in danger.

And that’s exactly what former Deputy Secretary of State Richard Armitage did when he leaked Plame’s identity to Novak – and what Novak did when he published the name of a covert CIA agent.

Between Armitage’s dishonorable act and Novak’s dishonorable act were a string of other dishonorable acts, including an executive order by President Bush empowering Vice President Cheney to declassify classified information, which Cheney did, thus allowing Libby to shop Plame’s identity around in hopes of finding a journalist willing to smear Wilson through his wife. With Libby’s information confirming Armitage’s original tip, Novak willingly blew Plame’s cover.

In so doing, he didn’t put Plame at personal risk, because she was not overseas at the time. But he did irrevocably damage her mission – and put those human “assets” at risk.

You see, al-Qaeda and its ilk rarely try to kill CIA agents – or anyone else who can fight back. What these cowards do is kill people who have worked with U.S. agents.

You can imagine the conversation: “Hmm, that Valerie Plame who visited here turns out to be a CIA agent. Didn’t she hang out at Hamid’s coffee shop a lot?”

Next day, Hamid’s body turns up, along with the bodies of his wife and family, all of whom were tortured to death before his eyes.

That’s the way our enemies play the game. That’s why we train brave men and women like Valerie Plame so America can fight back.

The outing of Plame may have been technically legal, as the commutation of Libby’s sentence undoubtedly was. But our supreme law, the U.S. Constitution, still defines treason as giving aid and comfort to our enemies in time of war.

And in this aging veteran’s eyes, that’s exactly what Armitage, Cheney, Libby and Novak did.

Bob Ewegen (bewegen@denverpost.com) is deputy editorial page editor of The Denver Post.