Erik Odom

In the wake of tragedy, LBPD training officer Traci Harmon takes on new trainee, Alex Diaz, who on day one is already learning the job is harder than he imagined.

With the suspects still at large and conditions worsening underground, first responders race against the clock to reach the trapped victims.

Following the subway tunnel collapse, Ruzek and Kidd treat injured passengers and track down the missing offender. Archer and Frost perform a life-saving amputation.