Eject!

[Spin]

https://www.youtube.com/watch?v=Z1cnvJO1TF8

 

From video explanation;

 

In this video one can clearly see the difference between an ejection that only uses power cartridges (as in the older ejection seats) and a "new generation" seat that uses booster rockets as well. Notice how the seat separates from the dummy before impact with the rocket assissted ejection. The seat will typically stay attached to the pilot above 10 000ft to provide oxygen, and then automatically detach and fall away when the pilot descends below that altitude