Marines of the 22nd Marine Expeditionary Unit (22nd MEU) board a CH-46E Sea Knight helicopter from Marine Medium Helicopter Squadron 261 (HMM-261) on the flight deck of the amphibious assault ship USS SAIPAN (LHA-2) during Operation Sharp Edge. The Marines will be flown to the U.S. Embassy in Monrovia, Liberia, to augment security and evacuate U.S. and foreign nationals from the fighting between government and rebel forces