Battle Report, Volume 5, Victory in the Pacific is an excellent book about the Pacific Campaign. In reading the book, I was fascinated by what was called Roger Peter One (Radar Picket 1). It was the post assigned to a Destroyer or Destroyer Escort located between Okinawa and the main American Fleet. RP1's job was to pick up on radar Japanese planes headed in the direction of the fleet and report their numbers, course and direction. The post became even more dangerous after the Japanese began using Kamikaze aircraft. RP1 was the first American ship these planes encountered and on almost every occasion the Japanese either sank or damaged the ship assigned to that post. Many American ships were lost while carrying out their early warning mission.