General Flynn added Isaiah 6:8 to his Twatter "Description" around the time he updated his banner... Isaiah 6:8  - 8Then I heard the voice of the LORD saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah chapter 6 deals with the recordings of Isaiah being called to be the messenger of God to the people of Israel. So General Flynn, if/when called is a go.