A move by the US Air Force last year to replace maps, charts, logs and other paperwork contained in a kit with iPads is expected to save more than $50 million over next 10 years. The 18,000 deployed iPads form an "electronic flight bag" that can hold flight manuals, weather and navigation charts and volumes of technical and procedural information -- eliminating the need for the 30- to 40-pound flight bag pilots used to have to carry with them, resulting in savings ranging from fuel costs to printing costs to even reducing pilot back injuries.