He's using his fighter experiences as one of the way's he's been tested. Although I fail to see how he was "tested" when he was not involved in executive decisions during the crisis. There was a discussion on this at the second link a few days ago.
Clip:
McCain also returned to his attack on recent comments by Democratic vice presidential pick Joe Biden that, just like former president John F. Kennedy, Obama would be "tested" by a crisis on the international stage within six months of taking office.
The military veteran noted he had some "personal experience" with crises, citing his role in the United States' 1962 showdown with the Soviet Union over its missiles in Cuba -- known as the Cuban Missile Crisis. At that time, the Republican nominee was as a fighter pilot assigned Cuban targets.
"I know how close we came to a nuclear war and I will not be a president who needs to be tested. I have been tested," he told an enthusiastic rally on a high school football field in Green, Ohio.
AFP: Obama leads White House race in three key states
//www.city-data.com/forum/2008-...en-tested.html