Fear has been clogging the city for years, through escalating layers of checks and guards, and more and more blocked-off roads.
Several layers of checks mean the result, which is impossible to predict, will be announced very late after polls close on Sunday night.
"We don't want to create all these layers of checks and balances," explained Dennis M. Walcott, the deputy mayor who oversees education, who described the three decades of school board rule as "dancing to multiple masters".
Security will include a police and military presence and private security guards carrying out several layers of checks, including individual body searches using metal detectors, there will be video surveillance cameras and a ban on rucksacks, motorcycle helmets and banners with political or offensive messages.
Three layers of checks must be passed before an aglet is allowed access to a computer, and one of these layers can be customised for example to reject aglets whose owners do not have subscriptions to a commercial database.The result is that letting someone else's aglet on to your computer should be about as risky as downloading an applet from the Net, which is generally considered safe.
20 Thus, any product enhancements that involve alerting provide an additional layer of checking, not a substitution for checking.
Soon after, Facebook eliminated the entire trending team and with it, a crucial layer of fact checking.
And ethical review, carried out at the local level and introduced a few years ago as a second layer of checks on research involving animals, "is enormously varied across the country".
"After 9/11, there were lots of added layers of security checks, especially for anyone with an Arabic name," said Slaughter.
Mr. Martir, in his summation today, seemed to favor a scattershot approach over Ms. Bumb's meticulous layers of canceled checks, taped telephone conversations and surveillance photographs.
