united states into world war ii. >> the generation with firsthand knowledge of december 7th, 1941 is dwindling in fact, less than 2%s a very important part in united states history japan is a country with fulfilling what it felt like was its manifest destiny the u.s. didn't like it leveling sanction after sanction. finally, stop selling oil to japan, froze its assets. perhaps inevitable december 7th felt like a stab in the back >> okay. >> this is actual japanese military footage six aircraft carriers with 400 planes sailing 200 miles north of hawaii. undetected >> an air attack will be carried out. >> their plan, decimate america's pacific fleet. before this day, war planners and strategists acknowledged an attack like this was possible. but -- >> they'll never do it >> yes to say it can happen, almost anything can happen in war >> dr. rob satino is a senior historian at the world war ii museum in new orleans. this kind of attack had never been launched before an attack by carrier based aircraft >> and pearl harbor was a target rich environment >> the arizona, the nevada, the west virginia. the oklahoma and the ca