According to current doctrine...
When Jesus comes back, he's supposed to come in with roiling clouds, lightning, white horses, and squadrons of angels to kick butt and take names.
The idea of a quiet Second Coming does have a lot of appeal, though. I enjoyed an underground comic series called the "New Adventures of Jesus" that was based around that idea. One of the places he ended up was on a college campus shooting for tenure.
A collected edition came out recently. Recommended!