He gave CPR to his daughter's rodent, just after he lost the rodent off of his boat, just like he lost Jolly Jim Rassmussen off of his Swift Boat.
Sorry, the rodent heroics don't count. I'm looking for heroic behavior of his in Vietnam. Although your commentary leads me to vow to always be clipped onto the boat with a safety line if I'm ever on one captained by sKerry.