They include Pakistan-based militant groups such as Jaish-i-Muhammad, which supply much of the manpower to the insurgency, in which 25, 000-70, 000 people (depending who you believe) have so far died.
In the case of the Hong Kong SAR, an official report about the manpower requirements and supply to the region until 2018 provided some insight into its most pressing needs for professionals.
It turns out the furniture maker would buy a whole year's supplyof wood when the price was good but didn't have the space or the manpower to unload the big shipments.