Before Ukraine disaster, America's 'Flight 17'

Fury and frustration still mount over the downing of Malaysia Air Flight 17, and justly so. But before accusing Russian President Vladimir Putin of war crimes or dismissing the entire episode as a tragic fluke, it's worth looking back at another doomed passenger plane — Iran Air Flight 655 — shot down on July 3, 1988, not by some scruffy rebel on contested soil but by a U.S. Navy captain in