Most hiring companies want to know that when they take a chance on hiring and training you, that you will stay with them for the long term. Nobody knows where life will take them three or even five years down the road. With that sais, this should not stop you from expressing where you would like to take your security career. You do not need to make any promises when answering this question, but you should convey an interest in growing with the company.

"My future goals within security include gaining my firearms license and ability to be an armed security officer. I have career goals that include leading a team, supporting law enforcement in every way possible, and protecting the public from harm for many years to come."