I had to vote present because I am not certain if Obama is in fact the Commander in Chief. I know it's a phrase often attributed to the officeholder of President but it's a little know secret there are security levels that a President may or may not be granted. Most people just assume that being sworn in automatically grants you an all access pass to everything there is to know but that access is NOT automatic. Some levels are, others are not. Now you may ask what if the President has a need to know but doesn't have clearance. Temporary clearance can be granted as needed.
So Obama may hold the political title Commander in Chief but the one thing that lets me sleep at night is knowing behind the scenes there are checks & balances on the mighty US war machine. You may have noticed in the publicized accounts of the UBL raid that Obama seemed to be dragging his heels right to the end. I also note that before Bush left office he told a reporter they would get UBL because the office would force his successor to do so. Taking all this into consideration it does help explain how an anti-capital punishment Senator would would become President and then order an assignation raid on US public enemy #1 despite his own beliefs.