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1:10
An interview with Milwaukee resident Alexandra Salazar.

53:50
He became an advocate for retired NFL players after retiring from the New York Giants.

46:53
She was shocked when her husband, who had never had a concussion, was diagnosed with CTE.

46:00
He developed a test to assess whether football players should return after concussion.

37:29
He retired from the NFL career after suffering seven concussions.

46:22
Her research lab has discovered CTE in the brains of dozens of onetime football players.

29:13
Deputy National Security Adviser

57:34
NSA cryptologist, 1964-01

56:50
NSA senior executive, 2001-08

4:30
The resurrection of Pebble Mine.

30:05
Football took a major toll on his body, contributed to as many as 74 surgeries.

53:39
He is convinced he has CTE following his Harvard football days and pro wrestling career.