Bang! Bang!

On early dawn a model student nick named Peanut, wakes up and gets ready for school but as she wakes up, she had forgotten to charge her phone last night and now her battery percentage is 53%. She then looks at the time and sees that she is running late, and as she hurries to class she just saw it as normal day as a normal student. Suddenly, Peanut hears a loud sound and since her class was a bit noisy, she just shrugs it off, after a few moments later she heard the same type of sound this time getting louder and louder and faster, then BAAM!!! Peanut sees her best friend butter slamming the door shut and panicking with a face of shock and tears streaming down her face and all of my classmates heard the same sound and the the whole class suddenly became quiet. The class hears it again, BANG! BANG! BANG! There is a school shooting happening right now. How are Peanut and the others going to make it through alive safely??? Especially with the shooter being Peanut's CLASSMATE!!!