Sec Def Gates is positioning the amphibious assault ship USS Kearsarge in the Med. What is it about the U.S. Marines and Tripoli?

From: Yahoo

USS Kearsargers

TRIPOLI, Libya – Moammar Gadhafi’s forces battled poorly armed rebels Tuesday for control of towns near the capital trying to create a buffer zone around his seat of power. The increasingly violent clashes threatened to transform the 15-day popular rebellion in Libya into a drawn-out civil war.

Amid the intensified fighting, the international community stepped up moves to isolate the longtime Libyan leader.

U.S. Defense Secretary Robert Gates said he ordered two ships into the Mediterranean, including the amphibious assault ship USS Kearsarge, and he is sending 400 Marines to the vessel to replace some troops that left recently for Afghanistan.