Imagine you work for the police and are involved in large covert surveillance of a notorious criminal. The team is experienced and includes a helicopter, cars, a high tech listening post, and over a dozen agents observing the site. Just after your team has taken positions, your subject gets shot. You can see the shooter, but are unable to move. Your colleagues cannot see what is happening, but you have difficulty getting into contact with them. The local police do not have a clue of what is going on – it’s a covert operation after all. They can’t start helping you out of the blue.