As you've probably seen on the news there was a tragic monorail accident on the Epcot line near the ticket and transportation Center this morning at 2am. One monorail pilot was killed but no guests were injured.
Human error seems to be the cause but not neccesarily pilot error since there are controllers that clear the monorails for movement. One of the monorails may have been backing up to get to where it needed to be to go back to the maitenance barn.
A terrible tragedy that this could happen. I only hope it wasn't because Disney was forcing anyone to work double shifts as they so often do.