these are his parents, weldon and marie. >> he cared about people. he was kind and considerate. >> reporter: just a nice guy. >> just a very nice guy, a very good person. >> reporter: the sort of person who volunteered for things, like helping to build houses for habitat for humanity. >> he really enjoyed it. >> reporter: justin was almost 31, the eldest of three. his brother nathan idolized him. >> all three of us stayed close, just always grew up like playing sports and hanging out with justin. >> he was just a great older brother. very supportive and caring and would give you the shirt off his back if you needed it. >> reporter: in fact, said sister sydney, justin saved her life when, as a teenager, she was caught in a rip tide at the beach. >> it was absolutely terrifying. i felt like i was literally drowning, and then all of a sudden there was justin, and he was pulling me up on our boogie board and telling me that everything was going to be okay, everything is going to be fine. >> reporter: so you get the idea. just a good person, a nice guy wh