BOULDER COUNTY, Colo. An endangered missing alert has been issued for a 14-year-old boy in Boulder with a developmental disability who was last seen earlier Wednesday.Maxwell Runner, 14, was last seen walking along S. Boulder R oad just south of Mackintosh Academy-Boulder a around 1:10 p.m. Wednesday.Law enforcement is concerned for his safety due to his developmental disability and said, it is unknown where he would go.The boy has brown hair and blue eyes, measures 5-feet-3, and weighs around 125 pounds. He was last seen wearing a black ball cap with a rainbow brim, a black hoodie and gray pants. If seen, call 911 or the Boulder County Sheriffs Office at (303) 441-4444. ...read more read less