Two US Navy warships are moving towards the coast of
Libya, two US officials tell CNN. The destroyers are the USS
Laboon and the USS McFaul. Both ships are equipped with
tomahawk missiles that could be used if a strike was ordered.
Tomahawks are satellite-guided cruise missiles that can be
programmed to hit specific targets.
“These ships will give the administration flexibility,” a senior
official said, if the administration orders action against targets
in Libya.
The USS Laboon was making a port call in Crete, a few hours
from Libya, when it was ordered to reposition. The USS
McFaul was outside the Strait of Gibraltar, a few days sail
from Libya, and is headed to the Libyan coast.
The US Navy typically keeps up to four Aegis-equipped
missile warships ships in the eastern Mediterranean to aid in
defending Israel and missile defense for southern Europe. The
McFaul and Laboon were part of that deployment.

security.blogs.cnn.com/2012/09/12/us-moving-navy-destroyers-off-coast-of-libya/

The US is always on point when it comes to these things.