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'Deadly missiles': Unsecured trailers pose threat to you and your family

Kristie Cox lost nearly everything because of a missing safety pin and chain.An improperly hitched trailer broke free on the road, slamming into her husband's SUV, tearing through its windshield and crushing the vehicle's left side. Her husband, Jeremy, and her 3-year-old daughter, Izzy, were both killed instantly. Only her son, Liam, survived.Experts say such improperly hitched trailers are a com

Kristie Cox lost nearly everything because of a missing safety pin and chain.

An improperly hitched trailer broke free on the road, slamming into her husband's SUV, tearing through its windshield and crushing the vehicle's left side. Her husband, Jeremy, and her 3-year-old daughter, Izzy, were both killed instantly. Only her son, Liam, survived.

Experts say such improperly hitched trailers are a common problem on America's roadways, one that has taken more than 300 lives in recent years.

Watch TODAY National Investigative Correspondent Jeff Rossen's report above or click here to read about the danger posed by unsecured trailers.