I'm sure all/most of us have one of these. Here's mine.
The Holo device Squad 451 had was faulty, though no one knew about this. Instead of destroying everything in a five metre radius, it would only explode for a short range. It killed the mutts before they killed Finnick. He was burned and knocked unconscious. It took days to find him.When he was finally discovered, he couldn't be identified because his injuries were that severe. People only learned that he'd lived when he'd recovered enough to tell them - this is why Annie still believed him dead when the other Victors were voting on the new Games. Panem has advanced enough medical knowledge and technology to heal him eventually though, and he and Annie mover back to District 4 with their newborn son.