Blackwater private forces guarded American officials and also trained Iraqis and Afghans for security work.

VOA: special.2009.06.19

But the area is guarded by the Secret Service and Chicago police.

VOA: special.2009.01.12

For years,this had been a closely guarded family secret.

VOA: special.2009.08.23

For example,a horse with wings once guarded a temple.

VOA: special.2010.02.03

Southern gunboats guarded the harbor.

VOA: special.2009.07.30

Southern gunboats guarded the port.

VOA: special.2009.08.06

There is no large public ceremony expected, and it will be held as a private event on the heavily-guarded grounds of the presidential palace.

VOA: standard.2009.11.18

Last Monday,a suicide bomber struck a heavily guarded U.N.aid agency in Islamabad, killing five people.

VOA: standard.2009.10.12

and asked "What did they do?" In the northern city Mosul, a suicide bomber exploded a car near a checkpoint guarded by national and Kurdish forces.

VOA: standard.2010.05.10

Holbrooke's location in Pakistan personally coming here is a closely guarded secret, given the heightened security concerns following deadly terrorist attacks in Lahore and Peshawar,last week.

VOA: standard.2009.06.03

To prevent violence, some 1,500 Israeli police officers guarded the Gay Pride Parade, which meant about one police officer for every two participants in the event.

VOA: standard.2010.07.29