These are all secondary sources. These are good sources because they all had backed-up evidence and they all were made closer to the event. A quote from one of these sources is “hundreds of Japanese fighter planes descended on the base, where they managed to destroy or damage nearly 20 American naval vessels, including eight battleships, and over 300 airplanes. More than 2,400 Americans died in the attack, including civilians, and another 1,000 people were wounded.”