Lights above mountain that vanished instantly

Hello at 8:30 pm. my brother and i saw an object/light above the mountains as if you were going to las vegas leaving 29 palms. I noticed the anomaly right after passing the palms restaurant on amboy road. I noticed it because it looked like a star but super bright and the only one. I looked around outside and confirmed it was still light out so no stars were visible yet. I mentioned it to my brother and he said something along the line of it's a planet or star. I told him to keep looking and that it looked as if there were two lights. A smaller one above a much larger light but so close as if they looked like one light. He said if anytime it was twinkling. After that he looked away. No sooner than looking away it just vanished. Just gone as if it was turned off with a light switch, instantly gone. As soon as it disappeared all i could say is " it's gone" (i never looked away after noticing it was the only "star" or whatever it was in the sky) i looked at my brother and his jaw dropped. When it disappeared we had just past the telephone tower next to our home. We pulled over in our driveway and my brother got out his phone and used two apps. One was for looking at stars and planets. Absolutely nothing was in that direction. The next app we used tells us the location of planes and helicopters. There was a jetliner two moutain ranges back but this is not what we saw. We agreed we would continue looking that way until we could see the jet. I ran to my home and charged my phone and called my friend at 8:42 and then 8:46. At first he didnt answer so i texted and called agin. He picked up and my brother and i told him what happened and what we saw. After getting off the phone with him we saw the jet and knew that it was way to high in the sky and it took roughly ten minutes to see the jet. My brother and i both agree that this is something we have never seen before and that it was definitely not a plane. It never moved from the position above the mountains my brother and i both agree on that.