Neighbor Heather Meier said she came home from work on Friday afternoon after picking up her 7-year-old daughter from school, and the two saw Arnold's body still lying in the street.
"As soon as we got home, we just shut the curtains," she said Saturday. "You know, tried to just watch some TV, have some snacks, mind our own business."
Across the street from her home, crime tape cordoned off Krumm and Arnold's faded blue and yellow house and part of the street. Meier, who has lived in the neighborhood for two years, said she met Arnold and James Krumm only once a few months ago and described them as quiet and very private.
Casper College instructor Kevin McDermott said Arnold and James Krumm were well-liked on campus.
"I knew these people pretty well, so it's hurting me. It's breaking my heart," said McDermott, who teachers algebra and computer networking at the school. "They were really good, kind-hearted people. People like Jim and Heidi are what make Casper College such a great college."