As far as I can tell the marine did nothing wrong. But the only thing I see Sikes doing wrong is not getting the video cleared for any sensitive information. Nothing in the video betrayed confidential information. He should be punished for violating the rules, but he is no traitor. The difference between Sikes and Kerry is that Sikes is describing what DID happen, while Kerry described stuff that DIDN'T happen.
Those of you comparing Sikes to Kerry are implicitly endorsing that Kerry wasn't lying and slandering in Congress.