the first phoot is of the P-61 over the states before it's transfer into a combat unit and the Pacific. note the nose without the traditional white three-digit letters, and then pulled off later due to overpainting in black/olive. P-61 squads practiced several painting methods and to paint over the protective radome, paint it white, paint it black -flat or glossy to match the fuselage paint, and in the rare incident it even was almost clear whatever fabric was being used to protect the overly sensitive AI, and it was overly sensitive I can assure you through chats with several P-61 veterans.
Also of note I have a very similiar pic of a Widow of the 421st flying over the same are in the background, it's red serial number on the boom being covered over for security reasons