I'm just home from Federal Way, and I saw this while it flew overhead.

Basically, an Asiana Air 777 was flying by. You could hear it before you saw it closely -- ba-da-DUM, ba-da-DUM. With each sound, one could see flames in the port engine, and on the third beat the flames would be in a long trail. It was almost like an old car backfiring.

Well above me, so I never felt in danger, but scary nonetheless.