WEB EXTRA: Walking in the footsteps of the UT tower shooter 50 years later

Here you can see the top of the tower where Charles Whitman fired the fatal shot at Austin Police officer Billy Speed. (Photo: Walt Maciborski / CBS Austin)

Author Gary Lavergne is an expert on the University of Texas Tower Shooting.

Lavergne wrote the book “A Sniper in the Tower” in 1997. As part of his research, he’s reviewed hundreds of documents on the subject and interviewed dozens of eyewitnesses and victims.

Here he recounts Charles Whitman’s steps up the tower on August 1, 1966.