. >> pete pontzer: on the beach, on that day, i just reacted. >> pelley: pete pontzer fit the carnegieorth carolina beach in 2015 when someone pointed to a boy swept away by a rip current. pontzer and another man swam about 150 yards. >> pontzer: and we found a young teenager, 13-year-old boy, and water was starting to wash over his face. >> pelley: this is the boy after they swam him back to shore. >> pontzer: as we get to the beach, a church youth group leader comes out and meets with us, and he says, "thank you. there's another one." >> pelley: a second boy was drowning. pontzer ran, broke his foot, ignored it, and swam out. he eventually lost sight of the boy, but the child was pulled from the water by others and flown to a hospital. so, why you? >> pontzer: i didn't think about it. it's kind of like, if you put your hand on a hot stove and pull it back right away without thinking-- that's kind of what it was like for me. it just needed to be done. and i did it. >> pelley: it was the same reaction for david mccartney, when fate arrived on a two-lane road in indiana. >> david mccart