Slight Thread Drift
I was in Flight Planning at El Adem c 1964 (we were going to Nairobi) and there was an Ace Freighters crew who were flying a Constellation and were taking freight under some MoD contract to Aden.
The Nav type guy helped himself to several copies of every Flight Planning chart available plus numerous topos and on the chart he was using put a straight edge from El Adem to Aden and worked on that ( no Nasser's Corner avoidance etc.)
Met the same crew,in what was Salisbury, a few weeks later