On September 17, 2008, Natonski notified Peralta's family that he would receive the Navy Cross instead of the Medal of Honor. Secretary of Defense Robert Gates rejected the Marine Corps recommendation, saying that his panel unanimously confirmed that Peralta's actions did not meet the Medal of Honor standard "without any possibility of error or doubt". Gates' central argument related to whether the already-mortally-wounded Peralta could have intentionally reached for the grenade, shielding his fellow Marines from the blast. During a Marine Corps investigation of the attack Natonski had said, "I believe beyond a shadow of a doubt" that the gravely-wounded Peralta covered the grenade. Doubt arose when some believed that Peralta was clinically dead when the grenade was thrown.