They will claim that those deaths while doing preaching for example are a case of ''time and unforseen occurance''.
If that IS the case, then the only things the angels are protecting them from is an actual demonic attack in field service.
I knew a JW that would literally walk dangerous streets because he believed he walked in a bubble of angelic protection. Pictures like that give them these crazy ideas and they take chances they ought not. When I burst they guys bubble, he was visibly shaken and terrified. Same guy belived that the angels gave him green traffic lights and that demons gave him flat tyres.