Parker, an 11-year-old non-verbal boy with autism, shown in this undated handout photo, went missing from a day home in Calgary's north end on Thursday, July 16, 2026. THE CANADIAN PRESS/Handout - Calgary Police Service (Mandatory Credit)Parker, an 11-year-old non-verbal boy with autism, shown in this undated handout photo, went missing from a day home in Calgary's north end on Thursday, July 16, 2026. THE CANADIAN PRESS/Handout - Calgary Police Service (Mandatory Credit)A non-profit representing Canadians with autism says better emergency alert systems for missing vulnerable people are needed after the death of a Calgary boy. Parker, an 11-year-old non-verbal boy with autism, shown in this undated handout photo, went missing from a day home in Calgary's north end on Thursday, July 16, 2026. THE CANADIAN PRESS/Handout - Calgary Police Service (Mandatory Credit)The National Autism Network says emergency alert systems and first-responder training need "urgent change" for vulnerable children and their families.