Marine Sgt. Dakota Meyer is perhaps this country’s best-recognized war hero, a man who risked his life over and over again to save his buddies from a Taliban ambush. That’s why he’s the only living Marine to be awarded the Medal of Honor — the nation’s highest award for valor — for his actions in Afghanistan or Iraq. It’s undoubtedly one reason why the defense giant BAE Systems hired Meyer after he left the Corps.

Then, BAE considered selling high-tech sniper rifle scopes to the Pakistani military. Meyer objected, given Islamabad’s um, unambiguous relationship with the terrorists and militants ...