Defense Secretary Jim Mattis talks to U.S. Marine Corps troops at a rifle range at the U.S. Navy base at Guantánamo Bay, Cuba, on Thursday, Dec. 21. 2017.
Defense Secretary Jim Mattis talks to U.S. Marine Corps troops at a rifle range at the U.S. Navy base at Guantánamo Bay, Cuba, on Thursday, Dec. 21. 2017. ROBERT BURNS ASSOCIATED PRESS
Defense Secretary Jim Mattis talks to U.S. Marine Corps troops at a rifle range at the U.S. Navy base at Guantánamo Bay, Cuba, on Thursday, Dec. 21. 2017. ROBERT BURNS ASSOCIATED PRESS