Different sort of risk
If I understand it correctly, Catholic priests don't normally give last rites to people who don't expect to die. These people, apparently, thought they were going to die. That's not a firefighter's "calculated risk" type of thing. It's a "I'm going into harm's way and I don't think I'll survive" type of thing.
That no man should scruple, or hesitate a moment to use arms in defense of so valuable a blessing [as freedom], on which all the good and evil of life depends, is clearly my opinion; yet arms ... should be the last resource. - George Washington