For more on the Yankee system, see https://www.youtube.com/watch?v=8Yw8g1Soigk
The US Air Force installed Stanley's Yankee escape system in its A-1E Skyraiders as well as its single-seat ones. The Navy incorporated it in single-seat Skyraiders in at least two attack squadrons late in their fleet service but not in any of their wide-body A-1s.
From a Stanley Aviation Brochure:
From Ed Barthelmes excellent A-1 Skyraider Walkaround*:
* If you don't have it, you should buy it: