21.   Cantor said he handed that videotape over to the police, as well as footage from a surveillance system that photographs club goers as they enter.

22.   Clients are also leaving room for security cameras and surveillance systems.

23.   Conservationists in the southern US, where the whales calve, have an elaborate aerial surveillance system to warn ships when right whales are in the area.

24.   County officials are considering setting up a video surveillance system to create a record of that process.

25.   Electronic surveillance systems, interior and exterior, use tiny, easily hidden cameras to provide constant monitoring of lobbies, laundry rooms, elevators and stairwells.

26.   Even though helicopters and high-technology surveillance systems can blow away some of the ground fog of war, military officials acknowledge that these sources have limitations.

27.   He and many other security experts say they doubt that even the most sophisticated surveillance system can catch everyone trying to slip through the cracks.

28.   His proposal implies the wider use of Carnivore, an Internet surveillance system that is used by the FBI, although the system is not named in the proposal.

29.   Hospital surveillance systems are more common, but still are not the norm.

30.   Hutchinson and Sexton instead opted to install a security surveillance system at the bar.