Privilege seperation

$ ps auxww|grep [n]tpd root    20003  0.0  0.1   536   772 ?? Ss    8:52AM    0:00.02 ntpd: [priv] (ntpd) _ntp    13851  0.0  0.1   496   808 C0- S      8:51AM    0:00.27 ntpd: ntp engine (ntpd)