Why weren't all aircraft grounded?
One scene that surprised me was the fact that there was a lot of aircraft taxiing at that Israeli airport when Gerry first landed there. Presumably they were internal flights, but why would you take the risk of allowing something that could help speed up the transfer of the infection?
What seems even more bizarre is the way that the Israelis allow an authorized flight into it's airspace. I know that Gerry mentions that he is from the UN, but if was the Israeli PM, I wouldn't care if an aircraft had the US President and the head of the UN on it, I still wouldn't allow it into my country.