airlift       
noun [ C ] uk/ˈeə.lɪft/ us/ˈer.lɪft/
 (因战争、水灾等原因交通不便时运输物资或人员的)空运
an operation organized to move supplies or people by aircraft to or from a place that is difficult to reach because of war, a flood, etc.
  The photograph shows injured Americans awaiting an airlift. 
Rain would hamper airlifts and possibly spark more deadly landslides.
 - More examples
 - The United Nations Childrens Fund is contemplating an airlift of supplies.
 - The mass evacuation might include an airlift of hospital patients out of the island chain.
 - Aid organizations increasingly depended on airlifts to try to get supplies from Lima to an air force base near Pisco.