Good for getting in, sabotaging, getting out, and escaping pursuit, most importantly, great for building full body endurance. More /pol/acks need to learn it, lots of cops are way too out of shape for their badges right now, if you know the area, you have an advantage in new ways to navigate across it Another skill is survival, Surviving in both wild and urban environments is essential. Prepping is always great, sooner the better. Your greatest weapon is your mind and body.