Low altitude balls over Mesa, AZ, appearing, then disappearing after a short flight in tandem.At approximately 9:00PM, I was in my backyard attending to my BBQ. From the corner of my eye I saw a extremely bright flash that lit up the entire neighborhood. I looked and thought for a second someone had shot off those massive fireworks. Two extremely bright red glowing balls of light were now sitting in its place, silent. As I pulled my phone from my pocket to get a video they started to move together eastbound. They remained extremely bright red, almost like a hot air balloon. They move together in tandem at approximately 80 knots at an altitude of 3,000msl. No position light or anti collision lighting was observed. As they moved east the one at the rear disappeared completely. The one in the leading position continued until it flashed a number of times then disappeared. The video does not do justice, these objects were incredibly bright casting a red hue over the ground as they moved. I am a professional pilot and know just about everything fixed wing and rotor craft display at night. These were completely silent.