DD wants to be a Forensic Pathologist-kind of like Abby on NCIS, although she has wanted to do this since before any of those shows were on tv. When on vacations she would watch a show on Discovery Science (we didn't have cable at home) called "Dr. G". The woman is the medical examiner in Orange County Florida. And DD loved the puzzle solving aspect, as well as helping the family close the chapter. She has been hooked every since. It will require she become a doctor and then enter the specialty. On a fun note, she volunteers at the Body Farm, she finds it fascinating.
DS wants to be an engineer. What kind of engineer? He changes his mind on that, the ones mentioned...aerospace, aeronautical, chemical...so far.