Skywalker Explosion 03 either a Skywalker Sound or Technicolor/Weddington Productions sound effect. It's a sound effects cluster of an explosion with what sounds like Sound Ideas, RICOCHET - CARTOON RICCO 03 in a -12 pitch. It perhaps debuted in More American Graffiti (1979), which was released by Universal Pictures; Skywalker Sound did the sound effects recording/sound design of that film. Links: https://www.youtube.com/watch?v=bfoo7lltR24 https://soundeffects.fandom.com/wiki/SKYWALKER_EXPLOSION_03#Audio_Samples