When bombs are falling from the sky, houses collapsing, dams breaking, and crops dying, humanitarian aid workers rush to the frontlines of war and disaster to deliver assistance to those who direly need it. Operating in the perilous and violent realities the affected live, humanitarian personnel face tremendous obstacles and dangers. Yet, they continue their work. World Humanitarian Day (WHD), which is marked every year on 19 August, expresses recognition to the aid workers risking and having lost their lives in the service of humanity and encourages people to take humanitarian action.