The US government is investigating over 600 potential UFO sightings, with the Pentagon tracking numerous cases concentrated off the east and west coast of the US, in the Middle East and South China Sea. Newly declassified video shows a metallic sphere and an oblong object. The Pentagon says there is still no credible evidence that any of the unidentified objects came from outer space.
• UFO: an unidentified flying object
• baffled: confused or perplexed
• infrared sensor: a device that detects infrared radiation
• commuter airliner: a small airplane used for short, frequent flights between two destinations
• credible: believable or reliable
Source: CBS News