Obviously, this is part of Hizbollah's strategy, using all of the foreigners in Lebanon as hostages.
It doesn't look that way from here. Hizbullah is fighting Israel and Israel has bombed the airport and exit roads making it very difficult to leave. Right now Hizbullah has it's hands full with the Israeli assault
A more real threat lies ahead for you. That if Hiz is forced to run and scatter some of their forces may try to take American hostages to ensure their safety and even safe passage to Syria as they retreat. This would suck America into this mess and maybe Iran and Hiz want this
I'm thinking that if Israel sends a large ground force into Lebanon, Hiz will fall back to Beirut. Just as the PLO did in '82. Then Beirut would be the last place on Earth an American would want to be.
You make a very good point/warning.