Kaz doesn't hear his phone over the guitar
Kaz hears it and jumps, startled. He stops playing and picks it up
Kaz: What's up?
(Bai!)
Kaz: Oh shit! I'm sorry-
Kaz: Uh-I guess I'm done then-
Kaz: Um-yeah, I'm done...
He puts down the guitar and walks over to the bunkers