The Department of the Air Force (DAF), through the 772d Enterprise Sourcing Squadron, is seeking willing and capable businesses that can provide one (1) base year and three (3) option years The Econom... The Department of the Air Force (DAF), through the 772d Enterprise Sourcing Squadron, is seeking willing and capable businesses that can provide one (1) base year and three (3) option years The Economist Online for DoD Libraries. The Department of the Air Force requires access to the digital version of Economist with 24/7 unlimited, simultaneous access and unlimited user access. Please see the attachment "The Economist Online - Sources Sought Notice" for further details and instructions.