Veteran actor Mo Gallini (Seinfeld, CSI:NY, 24) who currently stars at Jose Varges on NBC's breakout drama "Chicago Fire" tells us how close the cast is both on and off the set. He talks about tonight's big episode (9PM CST NBC) and dishes on what pop star you can find hanging on the set.

For more information on NBC's hit drama Chicago Fire, Click Here

Check out Mo's official website and see what he's been up to over the past 20 years in Hollywood! PS his wife is from Edan Prairie Minnesota and they come this way every 4th of July.