NBC military analyst General Barry McCaffrey, told NBC News via Youtube that he at first was very supportive of Gen. Flynn becoming Trump's national security advisor, but after reading some of his tweets said, “I’m now extremely uneasy about some of these tweets," which "border on being demented." The online interview continued, “I think that we need to look into this and sort out what's going on. He continued, “I think that we need to aggressively examine what was going on with Gen.