The 101st Airborne Division is an elite modular specialized light infantry division of the US Army. Trained for air assault operations, it has been referred to as "the tip of the spear." It is the most potent and tactically mobile of the U.S. Army's divisions. The 101st Airborne is able to plan, coordinate, and execute brigade-size air assault operations capable of seizing key terrain in support of operational objectives, and is capable of working in austere environments with limited or degraded infrastructure. These particular operations are conducted by highly mobile teams covering extensive distances and engaging enemy forces behind enemy lines. Its unique battlefield mobility and high level of training have kept it in the vanguard of US land combat forces in recent conflicts. More recently, the 101st Airborne has been performing foreign internal defense and counterterrorism operations within Iraq and Afghanistan.