This is a genuine evidentiary gap, not a failure of investigation. You cannot convict or even formally identify someone without evidence. The Cooper case’s evidence—thorough as it is about the crime itself—has not bridged this gap in more than fifty years.
Whether it ever will depends on whether evidence that currently does not exist, or has not been found, or has not been recognized as significant, eventually comes to light. This is not impossible. Cold cases have been solved decades after the fact when new DNA technology, new witnesses, or overlooked documents emerged. But each passing year makes this less likely in the Cooper case specifically, because the most important potential witnesses—the people on that plane—are aging, and the organic material that might yield forensic evidence is subject to degradation over time.
The gap between what is known and what would be needed for a resolution is real, and it is the central feature of the case as it stands in the twenty-first century.
—
## One More Look at February 10, 1980
Return, finally, to the beach.
Tena Bar is a sandy beach on the Washington side of the Columbia River, accessible by road in Clark County. In February 1980, it was a quiet spot where families could picnic, build fires, and enjoy a winter afternoon on the river. The Columbia here is wide and powerful, a major waterway that carries the drainage of a vast interior.
Brian Ingram was doing what eight-year-old boys do on a beach: working with the sand. His task—clearing a spot for a campfire—was the most ordinary kind of family chore. He raked the sand flat with his hands, working a few inches below the surface, and he felt something.