provide the prisoners with medical care, so U.S. medical personnel tended to the sick and wounded with few or no supplies. Upon arrival at the San Fernando railhead, prisoners were stuffed into sweltering, brutally hot metal box cars for the one-hour trip to Capas, in heat. At least 100 prisoners were pushed into each of the unventilated boxcars. The trains had no sanitation facilities, and disease continued to take a heavy toll on the prisoners. According to Staff Sergeant Alf Larson: Upon arrival at the Capas train station, they were forced to walk the final to Camp O'Donnell. Even after arriving at Camp O'Donnell, the survivors of the march continued to die at rates of up to several hundred per day, which amounted to a death toll of as many as 20,000 Americans and Filipinos. Most of the dead were buried in mass graves that the Japanese had dug behind the barbed wire surrounding the compound. Of the estimated 80,000 POWs at the march, only 54,000 made it to Camp O'Donnell. The total distance of the march from Mariveles to San Fernando and from Capas to Camp O'Donnell (which ultimately became the U.S. Naval Radio Transmitter Facility in Capas, Tarlac; 1962–1989) is variously reported by differing sources as between . The Death March was later judged by an Allied military commission to be a Japanese war crime. Casualty estimates The only serious attempt to calculate the number of deaths during the march on the basis of evidence is that of Stanley L. Falk. He takes the number of American and Filipino troops known to have been present in Bataan at the start of April, subtracts the number known to have escaped to Corregidor and the number known to have remained in the hospital at Bataan. He makes a conservative estimate of the number killed in the final days of fighting and of the number who fled into the jungle rather than surrender to the Japanese. On this basis he suggests 600 to 650 American deaths and 5,000 to 10,000 Filipino deaths. Other sources report death numbers ranging from 5,000 to 18,000 Filipino deaths and 500 to 650 American deaths during the march. Wartime public responses United States It was not until January 27, 1944, that the U.S. government informed the American public about the march, when it released sworn statements of military officers who had escaped. Shortly thereafter, the stories