News TV Videos Chicago Fire preview clip – “Leaders Lead” – tonight on NBC Written by Lena Lamoray on May 8, 2013 Sneak Peek: “Leaders Lead” – Severide takes matters into his own hands to solve his legal troubles, and an unspeakable tragedy devastates the members of Firehouse 51. Related posts:'Parks and Recreation' preview clips - Watch back-to-back episodes tonight on NBC'Chicago Fire' and 'Chicago P.D.' crossover event preview'The Good Doctor' season three preview