He doesn't care. John McCain is all about John McCain.
Stop and think about how long he has been the "go to guy" whenever there is something that makes headlines about the military. The press has long treated him like some sort of military expert and I don't think it is too difficult to imagine one or more reasons why. Someone once mused that a POW was far more to the (post-1960's) media's liking than, say, some soldier or Marine from flyover country who saved his buddies the hard way. They don't like to make heroes out of certain members of the military. Whether that is true or not, McCain somehow just keeps on getting breaks from the media and assorted elites that no other "Republican" enjoys.
As for getting us into conflicts, John McCain seems to have a sense that the US military is his own personal plaything, or at least is his to rent out to his "friend(s)" du jour. Whether it is members of the military or civilian security staff at - just for the sake of argument - some Mideastern embassy, John has a history of being perfectly willing to put them in harm's way; I doubt he's doing it "gratis."
Mr. niteowl77
You nailed it: John McPain is all about John McPain, and AZ is all about AZ, correction AZ is all about John McPain too!