P&J is a family-run, Knoxville, Tenn.-based civil contractor that tackles the country's toughest, most prominent and riskiest jobs, including emergency response and disaster cleanup from hurricanes, tornadoes and floods.

The 62-year-old, privately held P&J shuns the public spotlight but has thrived on the most high-profile of projects.

Website: www.pandj.com

Industry: Civil Engineering and Construction Management