1) The article says they plan to purchase a minium of 63, maximum of 18,000 iPad (or equivilent). That is a pretty large range.
2) The article states they may purchase an iPad equivilent which to the DoD means SOS style eReader.
3) They make the claim that it will save 70 pounds each flight. Dollars to doughnuts, you are still required to carry the paper copy on board for the next 5 years which just doubles the amount of work required.
4) Either the AF is going to purchase a $6.9B military safe version of iTunes or these tablets will be so locked down that they will be worthless. Did anyone on this board ever use the T-6 pattern simulator called VIPERS (Virtual Interactive Pattern Environment and Radiocomms Simulator) that they handed out for a while on the over powered Alienware laptops?
5) What happens when the battery dies and I don't have a cigarette lighter in the cockpit to plug it in? Although my jet was but in the 50's, they never installed such an option.