So they could protect the president. They are supposed to keep the code names of the president and his family secret. This way, possible assassins are not given additional information.
That's a secret.
Secret service
The Secret Service investigates counterfeiting.
bush has a secret service
The duration of On Secret Service is 1.48 hours.
The secret service.
The duration of In the Secret Service is 600.0 seconds.
Secret Service Agents
Luxembourg has a secret service. It is commonly known as "Lilliput".
On Secret Service was created on 1933-12-15.
Secret Intelligence Service was created in 1909.
The Secret Service ended on 1969-12-14.