Sgt. Andrew Delcio, an instructor, leads a guided discussion

Sgt. Andrew Delcio, an instructor, leads a guided discussion on the Marine Corps core values during a Lance Corporal Leadership and Ethics Seminar during the Marine Prepositioning Force Exercise aboard Marine Corps Support Facility Blount Island, Fla., Aug. 21. Twenty lance corporals participated in the course that will be required as of Oct. 1, 2015, to be completed to be eligible for promotion. (U.S. Marine Corps photo by Lance Cpl. Shannon Kroening/Released)