GQ reveals the Secret Service code names chosen by the top two Republican presidential candidates: Mitt Romney elected to call himself "Javelin." And Rick Santorum chose "Petrus."
"It's tempting to associate a candidate's code word with some aspect of their personality. Sometimes this is true and sometimes it is not. 'Petrus' is a biblical allusion -- as in St. Peter, the first pope. (The Latin name is derived from the Greek word for 'rock.') Perhaps 'Javelin' is a reference to the '60s muscle car made by American Motors Corporation, the company once run by George Romney."