Exactly the point that needs to be made here. Why would the US send ships to evacuate Americans from Israel? Only if there is going to be an attack on Israel. An invasion by Arab armies does not seem imminent so what could it be then? Missiles from Hezbollah and Iran in addition to the ones from Hamas? Is there something that the White House is hoping for that Israel should be preparing against?
Maybe intelligence pointing to a large transfer of Al Quds forces from Iran to Syria to prop up Assad has been discovered to be in the works?
Israel could not tolerate that and a war between Syria and Israel could break out bringing Syrian chem-bio weapons into play (not to mention likely Saddam weapons inventory).
The US would definitely have to get US citizens out then and there are lots of dual US-Israeli citizens.
Note the Der Speigel story indicating that Turkey is “expected” to imminently request Patriot missile batteries to be transferred from NATO inventory to its border with Syria and that German troops may be required to man them.
Things look to be getting hotter during the “end game” for the Assad Regime in Syria!