They will most likely be used against genuine pro-democracy protesters and/or Israel, but we are not supposed to think about that. "Higher strategic interests" are involved here.
"Military source: US arms deal continuing despite lawmakers' objections," from DPA, January 13:
Egypt's negotiations with the US to acquire F-16 aircraft and M1A1 Abrams tanks are proceeding smoothly, a senior Egyptian military source has said.
The source added that the negotiations are proceeding regardless of statements made by political opponents of US President Barack Obama, in what may have been an oblique reference to calls by US Congressman Vern Buchanan for the suspension of this deal over what he described as the “dictatorship of President Mohamed Morsy.”
He also said that news about fresh military assistance or deals always sparks controversies, which tend to subside when the deals are concluded. He alleged that those Congressmen or officials who oppose supplies of advanced weaponry to the Egyptian army belong to the pro-Israel camp.
He added that demands made by some Congressmen to stop weapon deals with Egypt are motivated by electoral interests, adding, however, that the US administration does not take into account the opinions of voters when it makes assistance deals because such deals are connected to higher strategic interests.
And what might those be, in this case?
Egypt has been getting US$1.3 billion in annual assistance from the US since it signed the peace treaty with Israel in 1979. Since Islamist President Mohamed Morsy assumed power in July 2011, a number of members of US Congress have called for withholding aid to Egypt.