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They scare off burglars with barking Burglars don’t typically want to mess with a house where there is a dog inside.

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However, there was no evidence of CCTV having desirable effects in parking facilities or suburban subway stations. Furthermore, the review indicates that CCTV is more effective in preventing property crimes than in violent crimes. Another question in the effectiveness of CCTV for policing is around uptime of the system; in 2013 City of Philadelphia Auditor found that the $15M system was operational only 32% of the time. There is strong anecdotal evidence that CCTV aids in detection and conviction of offenders; indeed UK police forces routinely seek CCTV recordings after crimes. Moreover, CCTV has played a crucial role in tracing the movements of suspects or victims and is widely regarded by anti terrorist officers as a fundamental tool in tracking terrorist suspects. Large scale CCTV installations have played a key part of the defenses against terrorism since the 1970s.

 

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The company offers private investigation, technical surveillance counter measure, intelligence, counter intelligence, counter surveillance and counter espionage services, among others. Employees comprise former law enforcement, military, financial investigation and intelligence personnel. And specialist services include financial forensics, computer forensic analysis and satellite tracking. International Intelligence Limited has operated in the private, corporate and commercial sectors, as well as with government agencies, embassies and different police forces. Australian firm Unity Resources Group was founded in 2000, and although its personnel are largely Antipodean, the company’s head office is in Dubai, UAE. Unity Resources Group offers crisis, risk, security, logistics, aviation, executive and medical services. It describes itself as “a trusted and reliable solutions provider of land, sea and air services in complex, challenging and fragile environments where dependable infrastructure may not be present. ” The firm has offices in Europe, Australasia, Africa, North and South America, the Middle East and Central Asia, and it employs more than 1,200 people. Unity Resources Group provides event security, security in high risk zones, asset security and guarding, and more. In 2007 some of its operatives were involved in a controversial incident in Baghdad in which two civilians were killed, but the firm defended the conduct of its employees. The Senaca Group is a wide ranging private security firm.