Respiratory Therapist Dalis Johana Ramirez, left, and therapist Belkis Melgarejo, adjust an Ecleris NIV/CPAP Helmet on a fellow hospital worker as they demonstrate to the press how it works under a tarp where El Tunal Hospital opened more beds this month amid the COVID-19 pandemic in Bogota, Colombia, Thursday, Jan. 21, 2021. The hospital says they bought 12 of the helmets that give oxygen treatment. (AP Photo/Fernando Vergara), APTOPIX