U.S. Naval Aircrewman (Helicopter) 2nd Class James McDonald, left, assigned to Helicopter Sea Combat Squadron (HSC) 21, describes the firing characteristics of a .50-caliber machine gun to Peruvian sailors during a tour of the amphibious assault ship USS America (LHA 6) in Callao, Peru, Sept. 1, 2014. The newly commissioned amphibious assault ship USS America (LHA 6) embarked on a mission to conduct training engagements with partner nations throughout the Americas before reporting to its new home port of San Diego. The America was set to be ceremoniously commissioned Oct. 11, 2014.