Transcript for A gate agent for Southwest Airlines sang 'You Raise Me Up' for a mourning mother
Finally tonight, America strong. It seems as if viral moments are happening more and more on airplanes these days, but what you are about to see here no one saw coming. ��� You raise me up where I can stand on mountains ��� Reporter: That's gate agent Scott wartd ward capturing the attention of a packed southwest airlines flight departing from Louisville to Phoenix. He was just performing for an audience of one. That moment was meant nor a -- for a passenger in the front row, the mother of Arizona state trooper Tyler edenhofer. He was killed on duty. 24-year-old Tyler, a Navy veteran and state trooper for just 52 days was on a Phoenix highway last July coming to the aid of officers who called for backup. My son and a training officer both got out of the car and went Reporter: A struggle ensued and the suspect grabbed one of the officers' guns shooting the trooper in the scuffle. My son is my hero, my warrior. Reporter: The youngest Arizona state trooper to die in the line of duty. Tyler edenhofer was remembered by his mother for his patriotism and dedication. The world just lost one great guy, and he will be missed dearly. Reporter: So when Scott ward encountered Deborah, something about her struck him. That's when she told me her story about how Tyler just passed away. Reporter: Scott felt an instant connection. I thought, what a better way to show tribute to this mom who just lost her son. Reporter: Scott got on the intercom and didn't hold back. ��� Raise me up to walk on stormy seas ��� Reporter: The song "You raise me up," the perfect choice according to Deborah. Just at the right time. ��� You raise me up ��� It also raised me up, made me feel good and made me feel honored. He was my whole life. When he was taken from me, just that song -- ��� you raise me up ��� The song was so perfect in so many ways. What a great thing to do. We thank Deborah and Scott for sharing that wonderful story. We thank you for watching. I'm Tom llamas, and I'll see you right back here tomorrow. Right back here tomorrow. ������������
This transcript has been automatically generated and may not be 100% accurate.