The first thing Holiday says after they dismiss the team: "Don't give me that look."
Brand doesn't know what she's talking about. He says so, which makes her sigh and shake her head.
"You know what I'm talking about. That look. When you think the kids aren't watching. Let me tell you something. They're always watching. And when they see the lack of trust on your face, it makes them lose trust in you. You're the director here, Agent Brand. Please act like it."
(Later on he'll look at this conversation and think, how could I be so stupid.)
(He'll never come up with a good answer, but at least he realized his mistakes.)