Longview ISD Alumni Toysha L. Walker & Judge Demetrius Eric Blacklock Longview ISD Alumni Toysha L. Walker & Judge Demetrius Eric Blacklock from helping organizations and communities thrive to connecting veterans with life-changing resources, these outstanding Lobos are making a difference through their leadership and service. Toysha L. Walker, president of Walker Quality Management Systems. Judge Demetrius Eric Blacklock serves as a Dallas municipal judge and presides over the South Oak Cliff Veterans Court
