They take an oath to serve the United States. If they notice illegal activity that can't be resolved through the chain of command, they have a responsibility to

They take an oath to serve the United States. If they notice illegal activity that can't be resolved through the chain of command, they have a responsibility to speak up and resolve it through being a whistle blower. We also don't know what evidence he has. It could be bullshit or it could be actual evidence but people on hacker news won't know the truth.