You were patrolling around a building perimeter, when you heard the noise, similar to that of someone hopping a fence and landing, then the sound of a blowtorch. You went to where the noise was coming from, when you noticed a girl, probably 20, breaching through a door. You raised your UMP40 at her. "Wh-" She immediately stopped trying to use the blowtorch, and raised her M4A1, aiming it back at you.