This is a complete standalone of nachtpilotens catalina for the PTO.it is dressed in bravo/4"s Black Cat skin.this is in two parts.part 1 is the plane.part two contains the sound folder,pylons,weapon for the swap over.this has the corrected flight files and has been E.V.A. for true airspeed on screen.it also contains additional field added weapons.two night missions are included.read the read me's for additional weapons required. have fun.