By Cameron JourdanStaff writercjourdan@oklahoman.comYUKON – The sun gleamed on the Southwest Covenant playground as children darted around like always on a warm September afternoon.But a short distance away, black SUVs with dark-tinted windows at the school's entrances indicated this wasn't a normal day.Monday was the first day of class at the small, private Christian school in Yukon since sophomore Peter Webb died Sunday due to a head injury he suffered during a football game on Friday night.Read more on NewsOK.com