According to this web-site, this is the shooter from Aurora, Illinois:
Who Is Gary Martin? - Gary Martin, 45-years-old, is the suspect responsible for today’s active shooting in Aurora, Illinois… Martin’s identity was first reported by criminal justice reporter Patrick Smith, who tweeted that Martin’s sister, Tameka Martin, confirmed his identity.
https://collegecandy.com/2019/02/15/gary-martin-aurora-henry-pratt-mass-shooter-information-biography/