I just found this on Wikipedia:

Exploration Mission 2

Exploration Mission 2 or EM-2 is scheduled to be the first manned mission of NASA’s Orion project, which is to restart manned exploration of the Solar System. It is to be launched as early as 2021 and will take a 2 person crew, for the first time, to a captured asteroid in lunar orbit.

There are so, so many ways this could go wrong.