His parents flew in from Europe for the funeral. It was unreal to imagine what they went through, my coworker's entire family was essentially erased. I wrote

His parents flew in from Europe for the funeral. It was unreal to imagine what they went through, my coworker's entire family was essentially erased. I wrote his father a letter explaining what his son meant to me. I never received a response... I didn't expect one either knowing what they went through, but I felt like it was my obligation to at least let them know.