Danielle Brock, left, and Desiree Ulibarri, right, watch as Jeannette Sanchez, center, practices CPR compressions on Cynthia Trevizo, who is lying on the ground at the University of New Mexico’s Johnson Field on Saturday. The group participated in the fourth annual Project Heart Start. Between 3,000 and 4,000 people learned compression-only CPR in free classes Saturday at various sites around the state. “If it’s easy to learn, more people are likely to do it,” said Dr. Barry Ramo of the New Mexico Heart Institute. (Marla Brose/Albuquerque Journal)