SDR

The surveillance detection route concept is a personnel movement and navigational system of strategy to detect, counter...

With the clandestine work of intelligence, mastering the art of SDR can turn an ordinary civilian into...

The tradecraft guide to counter-custody concepts of abduction and confinement, including identifying potential relevant threats, engaging evasion...

The tradecraft theory, concept and technique of general anti-surveillance (not counter) methodology for the streets / urban...