User blog comment:TheDarkMantis15/Ask My Characters/@comment-26522901-20150529000419/@comment-7637833-20150529001058

Sentinel: [This unit uses its built-in scanner to analyze its surroundings and gather data. As well, it communicates with any nearby electronic devices to scan its contents and update all the data this unit possesses should the need arise. Should any files be found corrupted or tampered with, rapid deletion will commence.]