Well, You'll have to look at their organisationatinal structure
then.
MRT Troop is also clasify under SOC. Just that their unit deals
only in protection of MRT. STAR is seldom seen and never seen in
public except for rare events like terrorist of bank robbery with
machine guns and all and during the Police Day Parade. SOC includes
the Riot police, Dog unit and Singapore Police Gurkha Contingent,
their duty is to support other units in the case of the Dog unit,
Quell civilian unrest like the Riot Police and protection of
sensitive areas for Gurkhas.
