USN had an A-3 Skywarrior (Also known as A-3D -nickname ALL 3 DEAD) that lost pressurization and was not responding. F-8 Crusader joined up on it and saw the crew slumped over in their seats. After a while, it flamed out and spun down. Fuselage had minimal damage and the cockpit was intact, but it lived up to its nickname. Oxygen starvation had killed them at altitude.