Sensing Nick's sudden discomfort, Kara looks over at what he is doing and gives him a subtle nudge to catch his attention before he sends it. She shakes her head and whispers, "Got NVGs and more in the SUV." Then she speaks to the Chief again, "Chief Barlow, my apologies for the interruption. Please continue."
When Nick pulled his phone and texted he made it look like he was jotting something down and he didn't have to interrupt the Chief to do it. Also he has a privacy screen so Kara would not be able to read his screen.
Nick waits until the Chief finishes answering the questions and then stands, shakes the Chiefs hand and thanks him for his time. When they leave the office he informs Kara about the text he sent to Rodny and upon her informing Nick that they already had those he smiles and shrugs his shoulders as he whips out his phone and texts Nevermind, got it covered to Rodny and says "Oops. Guess I was distracted when you got those." He then goes to the SUV and informs Ming of the information they gathered.