A crucial component of the tradecraft and spycraft skillset is general survival; emotional conditioning, intellectual reinforcing, wilderness adapting and “street” strategizing aka urban survivalism.
As with wilderness survival, the immediate environment and available resources within reach is utilized for optimal purposing on the streets. The streets is the jungle, the jungle is the streets. However, the human element is the differing dynamic. Animals are relatively predictable, driven by instinct. Whereas engaging people is a craft in itself. Urban survival is a mode of social engineering.