In the year 2169, Bennu has a 1/2700 chance of Earth impact. It is too small to be an ELE, but it would be thousands of times bigger than the Chelyabinsk meteor.
We will all be dead long before then. I mean didn't anyone on the team that developed this thing watch The Andromeda Strain (the original, not the remake)?!?
No, I don't actually think that will happen, but then again, sometimes life imitates art