A father who intervened during a deadly rampage at an Oregon elementary school said he was haunted by the memory of young students begging for their lives as he crawled toward an active shooter.

Kaylub Giamanco, 36, confronted a 16-year-old gunman who opened fire at Silver Rail Elementary School in Bend where three children and a teacher were killed , and two other people were severely injured. Police have said that Giamanco’s actions prevented further loss of life at the 400-student campus , and President Donald Trump praised him as “a great hero that went in and did the business.”

In his first interview since the incident, given to Oregon Public Broadcasting , Giamanco recalled the moment he entered the building after following the armed teenager onto the grounds.

“That’s when I started hearing children pleading for their lives,” Giamanco told OPB.…