I was looking through one of my P-38 books for some information when I came across something I didn't know.
quote
" One of the more unusual additions (and a welcome one to the pilot) to the P-38L was the installation of tail warning radar. A AN/APS-13 radar system was fitted within the aft part of the left tail boom. The transmitter-receiver system picked up the presence of an aircraft in a cone behind the P-38L, and immediately warned the pilot of this approaching machine by ringing a warning bell and flashing a warning red light alongside the gunsight"
If were talking about accurate modeling I want my bell