By Kanishka Singh (Reuters) – Uvalde Mayor Don McLaughlin on Friday disputed a recent report about the May 24 school shooting that said a Uvalde police officer awaiting a supervisor’s permission to fire his rifle missed a chance to take out the shooter who went on to massacre 19 children and two teachers. The report published earlier this week by the Advanced Law Enforcement Rapid Response Training Center (ALERRT) at Texas State University was commissioned by the Texas Department of Public Safety. ALERRT did not respond to a request for comment on Friday. The officer asked his unidentified sup…