Navy punishes officers overseeing SEAL training after candidate's death

The Navy has taken disciplinary action against three officers who oversaw Navy SEAL training earlier this year when a candidate died just hours after completing the infamous "Hell Week."

An investigation released Wednesday found 24-year-old Kyle Mullen died of acute pneumonia with the contributing cause of an enlarged heart. The report details how a lack of medical observation in the hours after the grueling training delayed getting Mullen the care he needed.  

The Navy has issued letters of warning to Capt. Brian Drechsler, the commanding officer of the Naval Special Warfare Center; Capt. Bradley Geary, the former commanding officer of the Basic Training Command, and a senior medical officer.