The President of the United States of America takes pleasure in presenting the Navy Cross to Corporal Marco A. Martinez, United States Marine Corps, for extraordinary heroism while serving as 1st Fire Team Leader, 2d Squad, 1st Platoon, Company G, Second Battalion, Fifth Marines, FIRST Marine Division, First Marine Expeditionary Force, in support of Operation IRAQI FREEDOM on 12 April 2003. Responding to a call to reinforce his Platoon that was ambushed, Corporal Martinez effectively deployed his team under fire in supporting positions for a squad assault. After his squad leader was wounded, he took control and led the assault through a tree line where the ambush originated. As his squad advanced to secure successive enemy positions, it received sustained small arms fire from a nearby building. Enduring intense enemy fire and without regard for his own personal safety, Corporal Martinez launched a captured enemy rocket propelled grenade into the building temporarily silencing the enemy and allowing a wounded Marine to be evacuated and receive medical treatment. After receiving additional fire, he single-handedly assaulted the building and killed four enemy soldiers with a grenade and his rifle. By his outstanding display of decisive leadership, unlimited courage in the face of heavy enemy fire, and utmost devotion to duty, Corporal Martinez reflected great credit upon himself and upheld the highest traditions of the Marine Corps and the United States Naval Service.