We were visiting my parents in Washington state and my mom asked us to take 3 old guns they had back with us to our home in Las Vegas (My father has dementia and she was worried he might try to fire one of them). My husband checked the airline website and saw that they needed to be locked in a hard case and in with our checked baggage. He did not notice the part about declaring the guns. Our flight was delayed so we went to get a bite. While we were eating I heard my name being announced on the loud speaker. When I returned to the gate an officer was waiting to take me back to baggage. Once I arrived I was informed that I had not legally declared the guns. Then a Federal inspector showed me his badge and said that someone would take me to my bag and I would have to fill out a tag to declare the weapons. I explained to them I did not know about declaring the weapons. I have never owned or traveled with a weapon before. The Fed inspector took my information and said I would receive a letter and I needed to do what it said. I am unsure of what is going to happen so I was wondering if someone can tell me what will happen. Will there be a fine? Will I have to go to court? I have never been in trouble nor do I have any criminal records. I even heard one of the officers tell the inspector after he took my license that I was clean or clear or something like that. I just need to know if I am in trouble for making a stupid mistake. I am going to worry until the letter comes so if anyone can help ease my mind or provide any information I would greatly appreciate it. Thanks