Back to the military use of civilian aircraft for nefarious activities.
I seem to remember hearing stories of soviet bloc airliners being a threat to NATO. The threat was that the USSR could have loaded commando \ Ranger forces onto civilian airliners and simultaneously stormed the likes of LHR, CDG, FRA etc while Spetznaz troops assaulted key airbases (other targets were available
) either via helicopter, AN-24 etc , fake civilian protesters or parachute etc.
The main airports would have provided staging points for mechanized equipment, troops & helicopters etc.
I always watched Balkan IL-18, Tu-154 & Aviogenex Tu 134 disembarking at BFS with trepidation. The hordes were scary!!! Sunburnt, hungover & back in Belfast in the pouring July rain. Ivan would not have stood a chance!