Lt. Col. Kain C. Anderson, commanding officer, Marine Unmanned Aerial Vehicle Squadron 1, passes the non-commissioned officer sword to Sgt. Maj. Avery L. Crespin during Crespin’s appointment ceremony at Lance Cpl. Torrey L. Gray Field, April 2, 2015. The sword represents a facet of military tradition and is entrusted to those who are responsible for maintaining it. (Official Marine Corps photo by Lance Cpl. Medina Ayala-Lo/Released) - Lt. Col. Kain C. Anderson, commanding officer, Marine Unmanned Aerial Vehicle Squadron 1, passes the non-commissioned officer sword to Sgt. Maj. Avery L. Crespin during Crespin’s appointment ceremony at Lance Cpl. Torrey L. Gray Field, April 2, 2015. The sword represents a facet of military tradition and is entrusted to those who are responsible for maintaining it. (Official Marine Corps photo by Lance Cpl. Medina Ayala-Lo/Released)