U.S. Marine Corps Staff Sgt. Jean B. Charles, an instructor

U.S. Marine Corps Staff Sgt. Jean B. Charles, an instructor assigned to Ground Supply School (GSS), Marine Corps Combat Service Support Schools, and students assigned to Supply Chain Management Basic Course class 15-19, celebrate after winning the GSS Spartan Challenge at Camp Johnson, N.C., March 21, 2019. The GSS Spartan Challenge enhanced the warrior spirit amongst the staff and students of GSS by putting their physical skills and Marine Corps knowledge to the test. (U.S. Marine Corps photo released/ by Lance Cpl. Stephanie E. Soto)