This is a link to a PDF of an article mentioning Virsig.
Setting up an outdoor situational awareness push package and surveillance system is generally pretty straightforward: You place enough cameras to cover the area you need to secure, make sure the network connectivity and power supply are solid, and turn on the monitors. But setting up a similar camera solution for a nearly 30-mile urban marathon so organizers can keep an eye on the course and spectators can watch via a jumbotron is another story altogether....
