SequentialAnimation {
     NumberAnimation {
          target: rocket; properties: "scale"
          from: 0.0; to: 1.0; duration: 1000
     }
     PauseAnimation {
          duration: 1000
     }
     NumberAnimation {
          target: rocket; properties: "scale"
          from: 1.0; to: 0.0; duration: 1000
     }
     running: true
}