You can hear it in his measured voice, it is the same clarity he had when he came back from Rehab. He is really on his game as of late, but you can sense the urgency, a quite one, like a concerned physican. Another tel-tale sign is he is bringing in guest from the Senate, with a frequency I haven't seen ever.
You are correct. His tone is measured. This is not the usual bit that is all about Rush.
Rush is speaking, at times, like a man who is speaking to his troops before a mission many will not come back from. Our situation is that serious.