Henry likes to steathily sneak up behind joggers before dawn and suddenly appear about 3 feet away from their right hand and stare at them and then match their gait.
The neighbor's pit bull liked him. The pitbull liked the two people, their second dog and Henry. Everyone else was dead meat walking.
My guess is that the kids' screaming and the JRT barking set the pit bulls into a state of excitement by an unusual situtation, and their predispostion is to attack if confused and excited, unless they've been conditioned to have another response. So, you've got a dog that basically needs "special handling." And yes Dobies were in that category 25 years ago, but the breed was altered by breeding. Unfortunately, pit bulls are not bred in accordance with professional breeding. Their not even recognized as a breed, and that's probably wrong.