." >> reporter: hopkinsville, kentucky, corn fields, picket fences, and patriotism. just to the south is fort campbell, home to more than 13,000 army soldiers and their families. after facing danger all over the world, soldiers return to a collective sigh of relief. after all, bad things aren't supposed to happen here. but when one young sergeant returned from a tour in afghanistan, he had no idea the enemy would be much closer to home. >> my husband got out to see if some guy needed help. >> multiple gunshots to his face and head, 911 call. >> he had only been back from fighting in the war for such a short period of time, it was tragic. >> my heart sunk. >> reporter: sergeant vincent goslyn jr., a 28-year-old father of five had served in the army for seven years as a quartermaster and mechanic. did vince ever express to you what it meant to him to serve his country? >> he absolutely loved it. >> reporter: tim hamilton is vince's cousin, but as he explains it, they were much more than that. >> were you kind of like a big brother to vince? >> yeah. with him, it was--