I should have known. I am the son of a Vietnam era veteran. I should have known. We spent two years on a naval base in California during the height of the Vietnam War. My parents’ best friend was shot down over Vietnam. Every night we knelt by our beds and prayed for “Uncle Art to come home safely.” They found his remains and he was buried at sea. My mother flew out to the aircraft carrier to escort Art’s widow. I should have known. I grew up in a country striving to be a more perfect union. A bastion of freedom. I should have known what it means to be a veteran. Then I watched two towers crumble while ordinary people faced a choice of jumping to their deaths or dying in the fire and rubble. And the ordinary people who charged a cockpit knowing this was their last desperate act for survival. What does it mean to be a veteran? To care about something so much you are willing to die for it. To voluntarily forfeit your independence and put your life in the hands of total strangers. To subject yourself to all manner of scrutiny, examination and harsh conditions. To immediately make lifelong friends with people from all across the human spectrum, and not care about their color, creed or caste. To work as a team toward one goal: complete the mission. To learn how to be lethal in the service of others and the mission. To write letters of love and apology to a spouse and children to be opened and read in the event of death. To prepare oneself physically, emotionally and spiritually for death, including suicide in the event of potential capture. To stand next to a 19-year-old soldier as he determines who will get his death benefit. To be in a hospital in Germany and sit by the bedside of a teenager who just had his leg amputated, and call his mother in Iowa, waking her up to tell her he’s alive. To crouch in a bunker while bombs burst around you and realize for the first time that this is what it means to be an American. To watch hundreds of American soldiers in formation at the Al-Faw Palace in Baghdad as they took the oath as new U.S. citizens. To fish in a canal in a boat at night with an Iraqi doctor who stated there was no PTSD in Iraq because all Iraqis have been traumatized. To watch Tongan Marines perform a Haka before destroying the combat medics in volleyball. To play hockey with Slovakian soldiers on a cement slab in Kandahar while temperatures hovered around 110 degrees. To buy a chess board for my son in a bazaar, while listening to the Afghan merchant describe his dream of a safer world for his children. To watch flag-draped caskets loaded onto a cargo plane on Memorial Day, knowing there are grieving families waiting in Dover. To come home but never to come home. To feel happiness but always colored with guilt for surviving. To be ordinary and live each day with memories of the extraordinary. To become emotional every time you hear the national anthem and gaze on a fluttering American flag. To do penance by sitting with veterans at the VA, listening to their stories of resilience and recovery. To walk through a veterans cemetery knowing each stone holds a sacred story of service, sacrifice and purpose. I never knew what it was like to be a veteran, until I became a veteran.