Male Blackjacket. Note pitch black compound eyes as opposed to chocolate brown in the bald-faced hornet (bottom of page).

I have been stung multiple times by the Eastern Yellowjacket - Vespula maculifrons (while stupidly trying to destroy their nest), but never by the bald-faced hornet or the blackjacket.  I have been around thousands of bald-faced hornets and yellowjackets and blackjackets in the wild, and they pay no attention to me whatsoever. I cannot stress this enough: they don't even notice your existence unless you bother them.