Mr McKinnon admitted the first few nights he joined the dog section were frightening.
"At the start I was s*** scared jumping fences, not knowing where you are. Wearing black you can be easily mistaken," he said. "If the public knew actually what happened at night they would be extremely concerned."
Mr Orchard agreed the job was not for everyone as dog handlers often found themselves running into dangerous situations while everyone else was running out.
"You're chasing people. You don't chase people normally. It's against the human instinct they are potentially armed," he said.
Not only did they face dangerous situations, the job also took its toll on the body, Mr Orchard said.
"You jump over a fence with a dog pulling you and you don't know what's on the other side. It might be 6ft on one side and 12ft on the other. It's very hard on your body physically."
Mr McKinnon said the hours he had spent with dog handlers during the last two years had given him a new appreciation for what they do.
"I'm quite amazed, personally, how the dogs find people. I think we should have more of them. I'm blown away," he said.
"They are all really good guys and extremely passionate about what they do."