Complex sentence: His colleagues are Sgt. Stephen Pink, who joined the National Guard to help pay for college, and Sgt. Zack Bazzi, a Lebanese-born American who would rather remain Stateside but is loyal to his unit.
Split into simpler sentences: His colleagues are Sgt. Stephen Pink, who joined the National Guard to help pay for college. And Sgt. Zack Bazzi, a Lebanese-born American who would rather remain stateside but is loyal to his unit.