The U.S. Air Force told ABC the ability to deploy U.S. bombers to Australia ``sends a strong message to adversaries about our ability to project lethal air power.''

At 11:02 a.m., the moment the B-29 bomber Bockscar dropped a 4.5-ton (10,000-pound) plutonium bomb dubbed "Fat Man,'' Nagasaki survivors and other participants stood in a minute of silence to honour more than 70,000 dead.

The senator behind a NATO-affiliated report getting international attention stands by the initial decision to include locations of U.S. nuclear weapons.