Disturbed from reading the documentation by the call, Rangin puts the notes down and accepts it listening to what Lt. Onn is saying.
A slow feeling of relief that his work had accomplished something washes over him. "Thank you, ma'am. It means a lot. I'm just relieved what little I could do has helped out." he says softly, with a tinge of regret knowing he cannot share this little moment of triumph with Kylah.
She may not care for him any more and it was obvious Security didn't give a damn, but it still mattered to him.