A book was apparently hurled at the head of U.S. President Barack Obama during a campaign rally in Philadelphia.
The flying missile narrowly missed hitting the President today.
It is not clear what the book was, where it came from in the crowd, or why it was thrown at Mr Obama – who did not appear to notice the danger.
But it is expected that there will be fallout from the security breach as the Secret Service investigates how close the President came to danger.
WATCH: Thrown book narrowly misses Obama (Incident at 4:38 mark)