It's one of those few cases where the unsub is an arsonist. The unsub was setting college dorms on fire. You were in the building that Gideon was in when you suddenly saw students running out of the building. There was a faint yell of Gideon screaming to get out of the building. There was a fire that burst not too far behind you. You started to run out of the building, helping students get out and telling them to not trample over each other. You sprinted out and looked behind you, seeing Spencer look up at the building engulfed in smoke.