As someone posted, Vietnam and I remember some other ship, but can't recall what exactly the event was. I'm sure I know of others but I just can't recall them.
But don't think the U.S. Gov wouldn't attack its own people, they wrote out an entire document on exactly how to do this with Cuba.
http://en.wikipedia.org/wiki/Operation_Northwoods
http://abcnews.go.com/US/story?id=92662 (2001)
And now things are coming out about Pearl Harbor, that we actually knew it was coming and our Gov or uppers allowed the bombing to happen.
Brain trying to wake the info up..