The case's first court-martial shines a spotlight on the military's 'zero - tolerance' failure.

On Monday, Air Force Sergeant Luis Walker will face a court-martial in Texas - the first case in the military's biggest sexual assault scandal in 16 years, and one that is shining a harsh spotlight on the military's supposed "zero-tolerance" policy toward sex offenders.

In the year since Walker was first accused of rape, an internal investigation has discovered 31 more victims, at least five other instructors have been charged with rape or inappropriate relations with female trainees, and 35 more have been removed from their positions pending investigations. Walker has been charged with multiple counts of rape and aggravated sexual assault.

On June 28, California Congresswoman Jackie Speier addressed the Lackland case on the floor of the House of Representatives. "Nothing has changed," she said, calling for a hearing into the alleged abuse. "We need to know once and for all why instructors have been permitted to abuse power so freely and we need to know from the top that the phrase 'zero tolerance for sexual assault in the military' is a fact, not a talking point."