Natasha set about working on the AI that had deleted files, comparing it to the other AI programs, analysing their systemic functionality and then upgrading their protocol interface.  She then looked at the files that Johnson had interfaced with, they weren't too important...a few minor schematic designs.  Then there was the matter of Johnson.  Finding out what made him act independently of preprogrammed interface would be something she would need time to analyse, so she localised the area of storage space in which the AI Johnson was kept and copied the entire file to a portable storage device, removing anything from the copied file that was added by the file or subprograms within the system in order to interface directly with the core program without affecting the entire system.<br/><br/>((Effectively she has the initial program with any updates Davis made to it without anything regarding personality or self-learned protocol))