The truth across all those decades, military projects, commissions, reports and hearings is that the vast majority of UFO sightings are easily identified and dismissed. They’re a mix of confusion about ordinary astronomical events (the planet Venus represents a huge chunk of UFO sightings), normal aviation events (planes flying in formation at night that look to an observer like a giant triangular craft), or what the intelligence community in a recent report called “clutter,” e.g., sky trash. But there’s always been a stubborn percentage of UFO and UAP sightings that can’t be dismissed as known phenomena or technology. Depending on...