UPPER MARLBORO, Md. — Three men convicted in the robbery and murder of a Howard University student who was also a former Marine were sentenced on Thursday.

Before the judge handed down his decision, family and friends of Alonzo Guyton, 24, were allowed to address the court. Guyton’s fiancee, Qianne Knox, couldn’t hold back the tears as she told the court about their love and Guyton’s plan to marry her. “Two years, I haven’t gotten over it; I haven’t dated anyone since,” Knox told the court.

Also in the courtroom were 18 Marines in uniform stood behind Master Gunnery Sgt. Kevin Buckles of the U.S. Marine Corps as he talked about traveling the world with Guyton. Guyton, a sergeant, spent 3