" Viral " is the 16th episode of the first season of the drama series , which originally aired on February 20, 2013 . Plot Summary
The episode follows the members of Firehouse 51 as they deal with both professional hazards and deep personal struggles: [S1E16] Viral
Consumed by guilt over his past actions involving a gang member, Cruz becomes reckless. His overzealous behavior during a call puts himself and his fellow firefighters in serious danger. " Viral " is the 16th episode of