"Hey guys, sorry I'm late. Did I miss any...?"
The shattered window stares at Rux. 

The little aftercracking parts dropped from the ceiling. 
In full amazement, Rux would stare into the rest of the group. 

He let out a little laugh and would then yell: "Excursion!" 
Hinting at the rest of the group to follow him as he jumped out the window.