An unknown briefcase.

She sees various labelled crates and lockers that hold standard issue Atlas gear but what stands out is a thick all black briefcase with no markings. She hears guards coming and grabs the case hoping it's what she came for. To her dismay there is no window on this floor. She hides behind a crate as two guards enter the room with stun batons. She gets an idea and uses her semblance on one to make him see a grimm.

Atlas Guard 1 "A beowolf here? Get it!" He starts swinging at the imaginary opponent. The other guard is focused on him.

Atlas Guard 2 "What are you talking about there's no grimm!"

Emerald makes the imaginary grimm evade the attacks before it stops where the other guard is. The hallucinating guard lunges forward and hits the other guard with the stun stick. He collapses to the ground as the semblance wears off. He's shocked at what he's done which gives Emerald enough time to smash him in the back of the head with the briefcase knocking him out. She makes a break for it as she heads for the roof. The roof guard sees her but she can't stop to use her semblance since it would take too much concentration. She makes a run for it and hops to the other roofs.