Original sentence: While the 845th continued to hack at the dense trees, grind limestone island into sprawling runways, the ground echelon along with the 502nd Engineering Squadron of the 89th Air Service Group (ASG) began the detailed work of bringing this air field to life
Edited sentence: While the 845th continued to hack at the dense trees, grind limestone island into sprawling runways, the ground echelon along with the 502nd Engineering Squadron of the 89th Air Service Group (ASG)began the detailed work of bringing this air field to life