The Acme Treadway Company is primarily involved with the construction of new trails or trail sections as well as the reconstruction, or rehabilitation, of existing trail sections.
The Hoodlums are the volunteer, all-season PATC trail crew who work in the North District of Shenandoah National Park, between Front Royal and Thornton Gap.
The Stonewall Brigade is the grandaddy of PATC trail crews, formed in the 1980s to work in the George Washington National Forest on Great North Mountain.
Founded in 1983, two Konnarock crew teams cover the Appalachian Trail from Rockfish Gap in Virginia to the Trail's southern terminus at Springer Mountain in Georgia.
Based from an old farmstead in Carlisle, Pennsylvania, the Mid-Atlantic crew covers the Appalachian Trail from Virginia's Rockfish Gap to the New York-Connecticut state line.