While I agree that Kerry should not hold ANY office, I must say my first thought on reading your post was that I thought you were talking about Senator Bush ....
? Senator Bush ?
Referencing "cowards" or "cowardly action in combat" ?
Consider that 29% of the type of high-performance jets that President Bush flew for three years crashed in "typical" non-combat training and patrol missions, I'd consider that he very adequately demonstrated his courage every time he strapped in the airplane and took off.
More than Kerry? Who tried to avoid combat when convenient, and left as soon as he could wrangle any excuse to return to NY? Debatable certainly.