Closed-circuit television

Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links. Though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores. Videotelephony is seldom called "CCTV" but the use of video in distance education, where it is an important tool, is often so called.

In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room, for example when the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing digital video recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion detection and email alerts). More recently, decentralized IP cameras, some equipped with megapixel sensors, support recording directly to network-attached storage devices, or internal flash for completely stand-alone operation. Surveillance of the public using CCTV is particularly common in many areas around the world. In recent years, the use of body worn video cameras has been introduced as a new form of surveillance.

America (advertisement)

"America" is an American political advertisement released by the 2016 presidential campaign of Bernie Sanders. It premiered on January 21, 2016 via YouTube, and to air on television in Iowa and New Hampshire shortly before the Democratic Iowa caucus and New Hampshire primary.

Content

The advertisement features "America," a song recorded by Simon & Garfunkel for their album Bookends (1968).

The ad starts with scenes of everyday American life over soft humming and gentle guitar strumming. As the line, "let us be lovers, we'll marry our fortunes together" plays in the background, a middle-aged couple dances at a small Bernie Sanders for President rally. Then Sanders is seen speaking to a few people in a backyard. As the ad continues, the crowds grow larger and more enthusiastic. A montage of many Sanders supporters appear, as the words "They've all come to look for America" flash on the screen. Sanders is then seen addressing a large outdoor gathering, interacting one-on-one with supporters, appearing before more energetic crowds, finally ending in a large auditorium filled to capacity with cheering people.