March 8, the Saudi Ministry of Education declared the closure of schools and on March 20, they suspended all domestic public transportations: flights, trains, buses, and taxis in a heightened effort to stop the spread of the virus (Yezli and Khan, 2020). Lockdown measure was announced in ...
Extra reserves might act as insurance against food shortage or bad weather en route; they might enable migrants to fly faster than the maximum range speed on flights where they are likely to encounter unfavourable weather; or they may help to ensure survival after arrival in new areas, ...