If you have studied the abduction accounts discussed by John Mack, Budd Hopkins, and David Jacobs, you will notice that the abductors have certain weaknesses. I wouldn't say that Mack, Hopkins, and Jacobs are/were even aware of such but it comes up often enough to raise one's curiosity.
I'm not saying there is a proven link between the abduction phenomena and the Navy's UAP's, but there are a lot of apparent connections.
I'll leave it at that.