In situations such as the one Saturday night, sheriff's deputies have to rely on their training and make decisions in an instant, he added.
"You lose track of time, you become very focused, your vision narrows, what kicks in is fight or flight," Bane said. While a person can choose flight, "the deputy's job is to stay there and fight. It's their job, we train them to do that."
Deputies are not trained to "shoot to wound," Bane said.
"When we discharge a firearm, we make the decision that we're going to take a life to save our own life or the life of an innocent person," Bane said. "A wounded person still has the opportunity to kill you because it hasn't stopped him."
Bane said he has been scared for his own life before.
"I know what the thought process is. I know I've been scared for my life and I know what went through my mind," he said, recalling the last time he drew his service weapon on someone.
He was a major, during Joe Meadows' tenure as sheriff, and working weekend duty.
"I almost shot an 18-year-old kid," Bane said. "I went back to my vehicle after it was over and I was literally shaking from running the scenario over in my mind."
"In a situation where you fear for your safety and your life, you rely on your training. If you believe a person is out to kill you, he's out to kill," he said.
Besides extensive use of force training in the training academy, deputies have to qualify on the range to use their firearms.
"There is so much training on the use of force, both classroom and scenario, and on protecting themselves and others," Bane said. "It's not just someone out there with a gun in his hand, shooting willy-nilly."
This deputy made the decision based on his training and assessment at the time that "I have to discharge my firearm," Bane said.
"I don't think anyone takes this job because they want to shoot someone," he said, adding that right down to a person the belief is "because I want to help people."
Rush to judgment
Regarding some criticism expressed on social media that the deputy should have tried to injure Mr. Beckman not kill him, Bane gets frustrated.
"You really can't comment on what happened unless you've been there and done that," he said. "People have rushed to judgment. They don't know the details of the investigation, they've already condemned the deputy."
Ideally, the sheriff said he would like everyone sit back and let the investigation play out and make a judgment once all the facts are available.
"It's not easy to do a job when people judge and there's not justification for that judgment," Bane said.
"Society wants police armed to protect us, that's what we do, we protect and train," he said.