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 one of the largest U.S.-based construction firm. The construction and engineering company is headquartered in San Francisco and was one of only two North American companies to make it into the top fifteen list of the worldâs largest construction contractors, based on 2015 revenues.