In the deep imprints left by their protective masks, I found a symbol of their sacrifice, but above all, I found evidence of the pain and helplessness of standing before an unknown enemy. If the marks left behind are the only trace, they speak volumes about the threat—that the enemy is invisible. When we are finally out of this, it will be in large part due to the women and men working in hospital wards all over the world, battling this devastating tide, rekindling hope, and alleviating the loneliness of the ailing, even if a simple gesture of kindness is the only remaining response.