Police set up tight defenses at major intersections.
Tips
memory
布 = 'to spread out, deploy' (as in 布置 'arrange') + 防 = 'defend.' Picture a commander spreading his defenders across a map — that's 布防.
register
Military and security register; you'll see it in news reports about troop deployments, border security, and police operations. Not used for everyday 'protect myself' situations.
