During GW1 we were trundling along near Cairo in our C130K when one of a pair checked in at FL 570. The Egyptian controller came back with 'no known traffic at your level ' I should think not. Always awesome to watch them take off in Thailand during the Vietnam War. Landing was an 'interesting' experience I understand. On our way to Akrotiri we had to divert to Larnaca as the 'resident' had blacked the runway in a crosswind landing.