 In July 1955, the W-27 Nuclear Warhead was considered as a replacement for the W-5 for the RASCAL.USAF requirements for the W-27 called for a 2,800 lb (1,300 kg) nuclear warhead with either electronic countermeasures equipment, infrared countermeasures equipment, or extra fuel to increase the range of the RASCAL... A design for the adaption kit between the W-27 and the RASCAL was completed in January 1957 before the RASCAL was canceled.Three bombers were originally considered as RASCAL launch platforms.