SHAW AIR FORCE BASE, S.C. -- Airmen assigned to the 20th Civil Engineer Squadron worked as a team to demolish an uneven concrete sidewalk upheaved by tree roots Aug. 10. The pavement and construction equipment Airmen, also known as “Dirt Boyz,” used tools such as a pneumatic 30-pound jack hammer and pickaxe to remove approximately five cubic yards of concrete to make way for a new path.