The most charitable interpretation of Senator McCain's constant touting of his military service is that he is simply milking it for political advantage.
It would be truly dangerous if McCain really considers himself a military expert, who can therefore ignore the advice of real military experts as President of the United States.
A man like McCain, with a history of being headstrong and shooting from the hip, is the last thing we need as President, in an age of complex global threats, including terrorists who may get nuclear weapons within the next few years.