The WFP-managed United Nations Humanitarian Air Service (UNHAS) provides common air services for the humanitarian community to very remote and very challenging locations. In doing so, it facilitates the implementation and monitoring of humanitarian interventions in numerous life-saving thematic areas. In most countries requiring humanitarian assistance, surface travel is impeded by challenging security situations, long distances and poor road conditions. Furthermore, most of the destinations the humanitarian community needs to reach are not served by adequate commercial air operators. When no other means of reaching isolated communities is available, aid workers can rely on UNHAS to provide access.