... the fabulous documentary "The Last African Flying Boat".
Catalina fans will be pleased to learn that the Catalina in that documentary is still flying as ZK-PBY in NZ:
I was intrigued by the deviation of the Egypt/Sudan border on Max Tow's map and had to look it up. The deviation was made for British Colonial convenience!
https://en.wikipedia.org/wiki/Wadi_Halfa_Salient
I also note the now-submerged Jebel Shaitan southeast of Wadi Halfa - in English, it is Devil's Mountain.