Complex sentence: Lester then grabs the gun, and orders everyone to evacuate the school, this finally forces the NYPD detectives to come in, led by Detective Audrey McDonald (Vanessa Williams) as a negotiator.
Split into simpler sentences: Lester then grabs the gun and orders everyone to evacuate the school. This finally forces the NYPD detectives to come in, led by Detective Audrey McDonald (Vanessa Williams) as a negotiator.