Original sentence: Marine Corps ground units are trained in basic air assault tactics and capable of performing heliborne operations that require them to walk off the airlanded helicopter.Since the 101st has relinquished its parachute capability, the 82nd Airborne Division is the United States Army's remaining parachute division
Edited sentence: Marine Corps ground units are trained in only basic air assault tactics and capable of performing heliborne operations that only require them to walk off the airlanded helicopter.Since 101st has relinquished its parachute capability, the 82nd Airborne Division is the United States Army's remaining parachute division