Yep, it is definitely POTUS signature on a document. Is this the MOAB that will explode in DC on Wednesday?
Notice that the pen was at a different angle from the other pen photos as if it was the hand of a clock that is getting close to some time. Could be x:30 or if it is inverted like the signature then it would be approaching x:00
Has anyone compared the whole series of pen photos? What is the time progression?