As someone in the know about DARPA, I think most people would be sorely disappointed if they found out what DARPA really does.
I've never bought into the zanier and unprovable conspiracy theories about DARPA. The Black Helicopter community loves to spread X-Files type rumors about it and counts on the vast majority of the population to know little or nothing about government projects.
If he was really present at Gettysburg, ask him to tell us (without benefit of Google) who it was that bloviated for two hours before Lincoln's famous and pithy speech.
Titor used to be a frequent topic of discussion on the old Art Bell Coast to Coast AM late night radio show and he's still mentioned quite often in the George Noory era of the program. He's been the fodder for a lot of pretty wild theories.
Shhhh! Don't say that. They'll start spinning inane conspiracy theories about that. They'll say the government is in sinister league with Big Aircraft Color Scheme.