ROCHESTER, N.Y. (AP) — Strange lights appearing over Lake Ontario had some residents of the Rochester area wondering if they were seeing UFOs.

It turns out the glowing objects were flares being used in a training exercise by the Canadian military.

The Democrat and Chronicle reports (http://on.rocne.ws/2qVY7HJ ) the Royal Canadian Air Force's Canadian Joint Rescue Coordination Centre in Trenton, Ontario, was conducting flare training around sunset Tuesday evening.

Canadian officials say the flares were dropped from airplanes for illumination and were visible from the U.S. side of the lake.

Photographs and video of the lights were posted on Twitter accounts of people who were near the lakeshore at the time.