Not many apparently.
There are two ways I interpret this to have gone down:
1.) Admiral Losey was engaging in illegal activities, was accused anonymously by principled people in his command who thought he was abusing government resources and wanted to put a stop to it. Admiral Losey figured out who these people were, and vengefully tried to put a spike in their careers.
2.) Admiral Losey had under-performing people working under him whom he had reason at one time or another to reprimand, be angry at, or take issue with. They took it personally and tried to torpedo him with allegations of abuse of government resources, with him having a good idea where those allegations originated with, and decided to get them out of his command.
Apparently there was no wrongdoing on his part that could be found by auditors. And the fact that McCain has a hand in this, and Benghazi is involved does tend to make one think there are other factors in play.