Isn't the most likely explanation for these sightings secret military aircraft testing/missions? There's been a number of credible UFO sightings lately, some e

Isn't the most likely explanation for these sightings secret military aircraft testing/missions? There's been a number of credible UFO sightings lately, some even by military pilots and captured on video. If you consider how long it's been since there's been a major breakthrough publicized in the air superiority department, and how advanced technology in general has become since the days of the SR-71, we're long overdue for some next-level aircraft likely to be kept under wraps until required to win a conflict.