Yang does a "Cool Guys Don't Look at Explosions" and keeps doing it when the explosion happens and Ruby, Blake, and Weiss duck down/ eyes widen/ and turn around.

First: team RWBY is walking away from a building and Ruby is asking Yang *why she took so long inside*. Yang responds with *Just wait for it.*

Second: The building is exploding/ed in the background. Ruby, Blake, and Weiss

Fourth slide Weiss turned around gets hit by a tire in the face. and fifth Ruby and Blake are panicking while Yang just ignores it all