It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
UFO Portugal believes the sightings are LED balloons.
“It is quite natural that many people are unaware of the phenomenon, however the most plausible explanation for these sightings is the release of LED balloons.