Double Standard? A Marine Was Discharged Over 1 Email Containing Classified Info

Do you consider this to be a double standard? Anyone else that was not in a position that Hillary Clinton was/is in gets punished to the extent of the law, no matter the nature in which the act was committed. This Marine attempted to save lives, in the only manner he knew how in that instance, even knowing in the penalties. Hillary Clinton acted as if she was above the law, lied under oath, and is sweeping her actions and the potential consequences under the rug. Or, more specifically, is not speaking about it and is hiding out. And she is not punished. Not even knocked off of the trial of the presidential race.

I do believe that the Marine should have been punished, because it is breaking a law (and how many times are we briefed on protecting sensitive and classified information?). I just don't think he should have gotten forced out. Moreover, How does Clinton get away with this? I understand it that only three emails contained classified information if I remember hearing that correctly, but in what manner? Surely I have heard nothing in the sense of saving lives in a timely manner. And with her position, why use personal email?

So I ask your opinion. Was the Marine's case handled correctly? Was Hillary Clinton's case handled correctly? Or is the position of power and knowing people in high and mighty places clear and evident?