In short, LASL would build the "physics package" of a new weapon. This included the high explosive, the physical nuclear material, and the package. Sandia Laboratory would put the weapon in a case and install firing, fusing, timing, and safety systems, the electromechanical element. The AFSWC would track all of this new development for USAF use and drop test the new weapon designs. The AFSWC was also required to monitor the development work of aircraft contractors to assure compatibility of plane and bomb. Lastly, it provided support concerning special weapons to other USAF commands and support for full-scale atmospheric testing, as had the SWC.