U.S. Marines assigned to the 15th Marine Expeditionary Unit board a French landing catamaran en route to the French navy Mistral-class amphibious assault ship LHD Tonnerre during Alligator Dagger. Alligator Dagger, led by Naval Amphibious Force, Task Force 51/5th Marine Expeditionary Brigade, is a dedicated, bilateral combat rehearsal that combines U.S. and French forces to practice, rehearse and exercise integrated capabilities available to U.S. Central Command both afloat and ashore. Marine Corps photo by Sgt. Jessica Y. Lucio/Released