Lawmakers asked Bray to play and replay the video so they could catch a glimpse of the puzzling visual captured through a plane's window.
In another video, Navy personnel documented a triangle flashing off the coast of the United States. Several years later, Navy personnel witnessed another triangle floating off a different coast in the U.S., Bray said.
"We're now reasonably confident that these triangles correlate to unmanned aerial systems in the area. The triangular appearance is a result of light passing through the night vision goggles and then being recorded by an SLR camera," he said. "This is a great example of how it takes considerable effort to understand what we're seeing in the examples that we are able to collect."