In seven years of practicing, many patients have walked through therapist Corey Candelaria's door. One of them was Mitch Kusick, who is accused of plotting to kill the president and massacre children at a high school Halloween event.
"It's been very difficult," he said.
Candelaria says the decision he made on October 29 was one of his most difficult.
"It's difficult for me. Difficult to think about what Mitch (Kusick) is going through, his family is going through, as well as what the community has to go through knowing this information."
That was the day Candelaria turned his client, Mitch Kusick, over to authorities. At his office, Kusick allegedly confessed to a plan to assassinate the President at a campaign stop in Boulder, Colorado on November 1st.
He also had more immediate plans.
According to a criminal complaint against him, the next day Kusick wanted to open fire at Standley Lake High School at a Halloween event where hundreds of children were present.
"He just seemed like a normal kid, you know?" said Broomfield High School classmate Garret Brown. "I was shocked you know. You don't think that a kid that you knew and went to high school with could do something like that."
A 72-hour mental health hold was placed on Kusick. He was at Exempla Lutheran Hospital during the president's visit to Boulder.
The Secret Service took Kusick into custody Friday.