Riley Strain’s mother and stepfather aren’t giving up hope that they will eventually find their 22-year-old son, who has been missing since March 8.”We’re still, you know, actively planning to bring Riley home with us,” Strain’s stepfather, Chris Whiteid, told NBC News in an interview Saturday, just over a week since his stepson went missing.But even as they confront their darkest moment, Chris Whiteid and his wife Michelle Whiteid said the outpouring of support and the search efforts of those in the community have “restored our faith in people.””We’ve had some really good volunteer…