How do you get health services to half a million people who have just arrived in a place that is not on a map and does not have any roads? You start with one umbrella. You scale up. In just over a month, BRAC’s pink vests have provided 153,000 medical services, through a network of 200 health workers, doctors, midwives and paramedics serving at 60 mobile health camps, ten fixed centres and an extensive door-to-door team. Small is beautiful, scale is necessary.