Triangle over Rancho Cucamonga, CA

The report, as filed

Stepped outside into the backyard. Noticed the degree of darkness (no moon). Happened to look up and saw triangular lights in the sky. Looked like wide red bars around the perimeter of the craft. Seemed relatively low (1,500 feet above ground level) in the sky moving progressively toward the east. It seemed silent. Was expecting that it might be a helicopter or aircraft, but no familiar sound accompanied the lights. I then dashed inside the house, grabbed my IPad and went back outside to take photographs. By the time I returned (15 seconds later), the lights were now higher in the sky, still eastbound and moving away much faster. I tried to zoom in the focus. The image stabilizer box on the IPad focused on the lights. I took two images, but as I said, by now the object was higher and moving away quickly. When I reviewed the two photos, they did not appear to show much of any useful image. My guess would be some military aircraft, but really don't know. I have a Commercial Pilot certificate and have been flying for 13 years. Have never seen anything like this before.

Held as-reported from National UFO Reporting Center (record NUFORC #135117). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.