From Military Times:

If all goes as planned, a successful landing of the X-47B experimental aircraft will mean the Navy can move forward with its plans to develop another unmanned aircraft that will join the fleet alongside traditional airplanes to provide around-the-clock surveillance while also possessing a strike capability. The aircraft’s success would pave the way for the U.S. to launch unmanned aircraft without the need to obtain permission from other countries to use their bases.

Update (16:51):

First Carrier Arrested Landing: