This video from an infrared camera aboard a police helicopter in the UK shows an object similar to one that has been taped in many situations. In normal light, it is bright silver metallic with a darker area in the center. In daylight video, the object appears to be able to vary the shape of the darker area.
It was recorded over the Bristol Channel in the UK, south of Wales. Your Out There Editor notes that the poster left comments on, and has received the usual moronic responses. People fear the unknown.
The still image shows similar objects that were videotaped in daylight, the one on the left in British Columbia and the one on the right in Mexico.