Rapid Deployment Forces in most militaries are used for deployment outside of their country's borders. The US Army's 82nd Airborne Division and the 75th Ranger Regiment are the best examples of Rapid Deployment Forces. Both units have the mission of having combat troops "Wheels Up" (en route by aircraft) within 18 hours of executive notification. Both units have the capability of "Forced Entry" into a territory to seize and secure key terrain, i.e. Drop Zone (DZ), airfield or airport, to accommodate additional follow on forces. A good example of this was the Operation Urgent Fury. The Rangers were at the staging base in Barbados in less than 18 hours from notification followed by the 82nd Airborne Division. The title of Rapid Deployment Forces is often associated with the US Marines. Unite