Maj. Joaquina Fontes-Lopes, Sheppard Air Force Base 82nd Medical Group education and training flight commander, gives first-aid demonstration to children at the Youth Center at Sheppard AFB, Texas, June 28, 2019. The Sheppard Parent Advisory Board hosted the sixth annual Trike-a-Thon, a morning of events such as tricycle rides, fire truck tours, face painting, first-aid demonstrations and more. The purpose of the event is to raise awareness for childhood cancer. (U.S. Air Force photo by Airman 1st Class Madeleine E. Remillard)