The death of a Navy SEAL candidate is under investigation after 24-year-old Kyle Mullen passed away just hours after completing "Hell Week" training. Toni Yates has the story.

The last Navy SEAL candidate to die during BUD/S training was 21-year-old Seaman James Lovelace who drowned in a pool during his first week of training in May 2016.

The death of a Navy SEAL candidate is under investigation after 24-year-old Kyle Mullen passed away just hours after completing "Hell Week" training. Toni Yates has the story.

Hell Week is a rite of passage for all Navy SEALs. It is the hardest week of the hardest training program in the U.S. military, Basic Underwater Demolition/SEAL (BUD/S) training.

The Pentagon is asking for time to allow the Navy to investigate the death of 24-year-old Kyle Mullen of Monmouth County, New Jersey, the fourth candidate to die during SEAL selection since 2001.

The training includes a seven-day stretch of little sleep, self-induced hypothermia and brutal physical conditioning known as “Hell Week.” It is here that the majority of SEAL hopefuls quit ...

Hell Week is a more than five-day training that puts candidates through rigorous training, including cold-water immersion, "surf torture," buoy swims, mud runs, all while operating on minimal sleep.