Bright light standing still high high high in the skiy, became dim and moved upwards quickly and vanished.While sitting out on a deck on a dark mountain in Cardiff, on the north coast of Jamaica, me and my Grandfather saw a light that was Extremely bright and far high up in the air as we watched the light turned off and became VERY dim, the light then went upwards quickly and vanished. There was no noise associated with the sighing, and it was no airplane and no helocopter, it was too high and was not moving until the bright light had dimmed down.