Man, the US Border Patrol's Tucson Sector has had a rough week, losing a second agent right on the heels of the high-profile friendly-fire death of BPA Nick Ivie earlier this week. RIP Agent Knight. Official message below (edited for privacy of the family): Ladies and Gentlemen: It is with great sadness that I inform you of the death of Border Patrol Agent Richard "Sterling" Knight from the Douglas Border Patrol Station. Agent Knight passed away Saturday, October 6th, as a result of an unexpected illness. Agent Knight, a 29 year old Texas native, entered the Border Patrol Academy as a member of Class 1000 on January 16, 2012. He is survived by his father, his mother, his step-mother, his step-father, and his two sisters. His step-father is the Assistant Patrol Agent in Charge of the Uvalde, Texas Border Patrol Station. Agent Knight's mother, is a former Border Patrol agent. On behalf of the entire Border Patrol family, I extend my deepest sympathies to Agent Knights family, friends, and colleagues. Please keep them in your thoughts and prayers during this difficult time.