Back in the early 1990s I worked as a doctor in the Dabaab refugee camp which at the time was providing a safe haven for those fleeing the civil war in Somalia.

The plane that took me there from Nairobi flew north over pleasant, relaxing country on the Somalian and northeastern Kenyan border.

As we approached our destination, it suddenly dropped, descending in spirals down to the airport, which sat directly on the end of the runway, and landed.

Apparently this manoeuvre changed each time to prevent the plane being targeted by gunfire.