narcotics –n. drugs that have a powerful effect on the mind and body whose use is highly controlled and often illegal

demolish –v. to tear down, destroy

exodus –n. the act of a group leaving a place

couriers –n. people who carry packages or letters from one place to another

deterrent –n. something that keeps people from doing some activity

rehabilitation –n. the process of bringing someone (who is sick, injured or has a problem) back to health

retain –v. to keep