Shimmering Cylindrical Object

The incident occured on a clear sunny day with only a few clouds in the sky. While walking outside, I observed a shimmering object floating or hovering in the sky. It was cylindrical with the narrow ends at the top and bottom. It got larger which would mean it was heading southwest and, as it enlarged, it appeared to be different shades of orange as though there was a flame. I could not make out any other details. I then came across another person who also did not know what it was. I was briefly facing away from the object to speak to them and when I turned around, the object appeared to be moving north (and slightly to the west). It was much smaller and more like a yellow speck of light. At the same moment, I heard an aircraft coming from the east and then, a minute or so later, from the west. The sound of the aircraft from the east seemed like it was in the general direction of the object. The trajectory of the second plane seemed unrelated.