privates elliot lockhart have picked up an june known group of planes the largest they've ever seen. this is what it looked like. it's not a blip. but rather, it's a spike. the taller the spike, the larger the target. right here is a chart that elliot and lockhart plotted which they don't know at the time is a japanese strike force. it was called into the information center. a brand new guy first day on the job was told that they have a large formation of planes from the north. sensing they are friendly planes b-17's from california he tells them not to worry about it. was he wrong? first of all, right off this chart would have been the b-17's flying parallel with the japanese strike force. he was told by an american bomber pilot if the radio was on past midnight that meant that a flight of aircraft were coming in from california. when he drove in that morning to the information center the radio was on. he thought he had picked up friendly planes. they indeed turned out to be the japanese strike force. this is what radar looked like in 1941. these are two mobile vans. this is the arr