A couple points here…
First of all, this should provide us all with a reiteration of the basic truism of American military aid, lest we continue to imagine that we can deplete the security resources of militaristic regimes (like Sisi), and thereby cause their downfall: The US will always supply you with weapons, as long as you prove you will use them.
The other point to mention here, not mentioned by PBS, is that about half of that money is going directly to Raytheon, and a good proportion of the remainder is also going to be distributed among American defense companies.
It is not, strictly speaking, aid to Israel. It is aid to the highest spending and most actively lobbying industrial sector in the US; the defense and aerospace industries.