What role did Dorie Miller play during the attack on Pearl Harbor?

Through
his brave actions on that terrible day, Dorie Miller became the first African American recipient
of the Navy Cross, which at that time was the third-highest honor in the United States
Navy.

During the Japanese attack on Pearl Harbor, Miller, despite having no
formal training in their use, manned an anti-aircraft gun which he used to fight off enemy
dive-bombers....