An edge-of-your-seat view into the lives of everyday heroes committed to one of America's noblest professions. For the firefighters, rescue squad and paramedics of Chicago Firehouse 51, no occupation is more stressful or dangerous, yet so rewarding and exhilarating. These courageous men and women are among the elite who forge headfirst into danger when everyone else is running the other way and whose actions make the difference between life and death.

From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected to Navy and Marine Corps personnel, regardless of rank or position.

The New York office of the FBI brings to bear all their talents, intellect and technical expertise on major cases in order to keep their city and the country safe.

The New York office of the FBI brings to bear all their talents, intellect and technical expertise on major cases in order to keep their city and the country safe.

An elite squad of detectives investigate high-profile crime and corruption in metro Toronto.

An elite squad of detectives investigate high-profile crime and corruption in metro Toronto.

The Fugitive Task Force relentlessly tracks and captures the notorious criminals on the Bureau's Most Wanted list. Seasoned agents oversee the highly skilled team that functions as a mobile undercover unit that is always out in the field, pursuing those who are most desperate to elude justice.

A realtor is pulled back into the life he left behind after his former partner-in-crime resurfaces with an ominous message. With his crime-lord brother also on his trail, he must confront his past and the history he never fully buried.

Follows the elite agents of the FBI's International Fly Team headquartered in Budapest as they travel the world with the mission of protecting Americans wherever they may be.

Starting over isn't easy, especially for small-town guy John Nolan who, after a life-altering incident, is pursuing his dream of being an LAPD officer. As the force's oldest rookie, he's met with skepticism from some higher-ups who see him as just a walking midlife crisis.

The Fugitive Task Force relentlessly tracks and captures the notorious criminals on the Bureau's Most Wanted list. Seasoned agents oversee the highly skilled team that functions as a mobile undercover unit that is always out in the field, pursuing those who are most desperate to elude justice.

Follows the elite agents of the FBI's International Fly Team headquartered in Budapest as they travel the world with the mission of protecting Americans wherever they may be.