A paratrooper helmet is a type of combat helmet used by paratroopers and airborne forces. The main difference from standard combat helmets is that paratrooper helmets have a different harness and lining to withstand impact when jumping from aircraft and to keep the helmet stable in flight, and most have a lower-profile shell to reduce wind resistance. Most modern combat helmets have features making them suitable for airborne use.
developed for use by Special Operations Forces by the United States Army and became the basis of the Advanced Combat Helmet. It has now become the official combat helmet of the United States Army.(ACH)[2][3][4]
