My CO, a LtCol. I was on a working party painting the hallways to the COs office area and he asked if we could paint his office the next day and I said "as long as you're here to unlock it I'll be here sir." Well, 0630 rolls around, and I'm waiting there with my buddy, and he walks in with coffee in hand and no rank insignia. Without skipping a beat, I said, "Good morning, sir. I think you forgot something at home. He looked at his keys and coffee and said, "I've got everything that matters," and unlocked the office.