English: This late 1960s photograph depicts a field that had been converted into a make-shift airport in Calabar, Nigeria, where relief efforts were aided by a helicopter team. These helicopters could move one ton of crated, dry fish quickly to refugee camps in the Nigerian-Biafran war zone. In 1967, the CDC was asked to assist the International Committee of the Red Cross (ICRC) in its disease control and death prevention efforts during the Nigerian-Biafran war. A large number of relief camps were established for purposes of nutrition assessment, and feeding operations for the local villagers around the war zone.