Also called carotid artery disease, carotid stenosis is caused by a buildup of plaque inside the artery wall that reduces blood flow to the brain. The process of plaque buildup is called atherosclerosis. Carotid stenosis is a major risk factor for stroke and can lead to brain damage.
Most shipbuilders in the United States are privately owned, the largest being Huntington Ingalls Industries, a multibillion-dollar defense contractor, and the oldest family owned shipyard being Colonna's Shipyard in Norfolk, VA.
Bechtel is currently the largest U.S.-based construction firm. The construction and engineering company with headquarters in San Francisco was the only North American company to make it into the top ten list of the the worldâs biggest construction contractors, based on 2012 revenue.