When a person is making a recounting of an event, then such person is a primary source of information.
This was a period in history when the Japanese Navy launched a surprise attack at the US naval base in Pearl Harbor and left devastation and loss of life in their wake.
I can infer that you are referring to the text Reliving the attack on Pearl Harbor where the events of that day are reconstructed of eyewitnesses accounts and the horrors they experienced.
Please note that your question is incomplete so I gave you a general overview to get a better understanding of the concept.
Read more about Pearl Harbor here:
https://brainly.com/question/860420