Interview with police officer who was injured as he fought off London Bridge terrorists

The transcript details a person's recollection of an incident on London Bridge. Initially, the person hears a scream and observes unusual behavior from bystanders, indicating something is wrong. As events unfold, the person hears shouting and glass breaking, prompting them to run, assuming a pub fight due to the Champions League final. The narrative captures fragmented memories and the gradual realization of the situation.

How did the teacher's colleague react to the situation on London Bridge?

What assumption did the teacher make about the situation after hearing the glass smash?