Sgt. Justin Leduc conducts marksmanship training on the flight deck of the USS Essex during Amphibious Squadron/Marine Expeditionary Unit Integration Training off the coast of San Diego Feb. 27, 2015. - Sgt. Justin Leduc conducts marksmanship training on the flight deck of the USS Essex during Amphibious Squadron/Marine Expeditionary Unit Integration Training off the coast of San Diego Feb. 27, 2015.