Driving with my daughter from San Diego to Orlando I sighted three 'orbs' at the top of a mountain as we drove toward Gila Bend. Joking with my daughter that there appeared to be UFOs in the night, I thought they were tower beacons. As we drove on the orbs reduced to two and were farther away, still joking with my daughter about UFOs but I started wondering what they were.As we came down the mountain the orbs appeared to flicker off and then a few seconds later with come back on. At this point I asked my daughter to record them on the video camera and this is what we recorded. We were still driving at a high rate of speed which makes the video 'shaky'.When we reached Orlando I remembered a History UFO Show about the Phoenix lights and that is what this reminds me of. I also found out that Luke AFB is in the area and what I saw were 'targeting balloons' but a friend familiar with targeting balloons said they would last this long and wouldn't come back on!!