The father of eight children, Walp said his association with Bopsy inspired him to lend a hand to others racing special challenges.
"I think that I look at life and appreciate it more after seeing Bopsy's life cut short," he said.
That summer, a few months after helping make Bopsy's wish come true, Walp received a phone call from the youngster's mother.
If Bopsy was too sick to come to the fire station, Walp would take the fire station to him.
He met a crew outside the hospital, and the firefighters raised the ladder on the fire truck all the way up to Bopsy's window.
"I climbed the ladder first, and then came the rest of the guys--they all knew Bopsy from the earlier station visit," Walp said.
According to the Make-A-Wish Foundation's account of the story, Bopsy was asleep and extremely weak from the effects of the disease that was about to take his life.
Somehow Bopsy gathered the strength to go downstairs in a wheelchair to the fire thick for a round of photographs with his new friends.