total) voted for the continuity of the Texcoco project and 747,000 voted in favor of Santa Lucía (69%). Construction On April 24, 2019, Mexican president Andrés Manuel López Obrador announced that construction of the new airport would commence on April 29, 2019. On 12 June, a judge ordered the suspension of construction of the airport until environmental and cultural studies have been completed. The Secretariat of Environment and Natural Resources (SEMARNAT) announced its approval of construction of a terminal at the new airport site on July 17, 2019. Construction officially started on October 17, 2019. President López Obrador stated information regarding construction would be released in the coming days, saying transparency will be key in the project. The airport is intended to focus on low-cost and cargo airlines to help relieve congestion at Mexico City International Airport. Mexican architect Francisco González Pulido and military general Gustavo Vallejo are in charge of airport design. The master plan is in charge of Groupe ADP and the airspace navigability studies were made by Airbus subsidiary NAVBLUE. The Valley of Mexico will be the first in the country where the performance-based navigation system (PBN) is used, which will allow the Felipe Ángeles International Airport, Mexico City International Airport and the Toluca International Airport to operate simultaneously without the operations of one impeding those of the others. Remains of at least 200 mammoths were discovered during the construction of the terminal area, in the former Lake Xaltocan. Most of the newly discovered mammoths likely died after being trapped by mud in the ancient lake or hunted by other animals. Nothing was found that would require halting work on the airport project. Construction occurred during the COVID-19 pandemic. Despite social distancing and other efforts to avoid infection, at least four employees were infected with the virus and there were 37 suspected cases along with three deaths as of June 9, 2020. President López Obrador flew on the fifteen-minute Air Force inaugural flight from the Benito Juárez International Airport in Mexico City on February 10, 2021. He was accompanied by Luis Cresencio Sandoval González (SEDENA), Claudia Sheinbaum (head of government of Mexico City), Alfredo del Mazo (governor of the State of Mexico), Omar Fayad (governor of Hidalgo), Arturo Zaldívar (president of the Supreme Court), Dolores Padierna (vice president of the Chamber of Deputies), and José Rafael Ojeda Durán (SEMAR) The airport's first terminal and two runways were