Gary Roberts is a nurse and pilot from the US who works as a missionary in Chad, central Africa.
When he came across a herd of elephants that had been killed by poachers in 2013, he attempted to rescue the sole survivor, a baby elephant he named Max, which he then flew home in his small Cessna 172.
Sadly, Max later died as a result of the ordeal he had endured.
Video with Mr Roberts narrating the incident.
YouTube link. Alternative BBC News video link.