The Department of Defense is headed by a civilian; the Secretary of Defense, who is appointed by the President of the United States. Under the Secretary of Defense, there are three military departments: The Department of the Army, the Department of the Air Force, and the Department of the Navy. 1  Each of these military departments are also headed up by civilians; the Secretary of the Army, the Secretary of the Air Force, and the Secretary of the Navy.
Melanoma is not as common as other types of skin cancer, but it's the most serious and potentially deadly. Possible signs of melanoma include a change in the appearance of a mole or pigmented area.
Changes in shape and size can be a sign of early melanoma. Other recognizable traits of this cancer include: 1  Asymmetrical skin growths, a mark that is dark on one side and light on the other for example.hile still in its early stage before the cancer has had the chance to spread, it can be treated. Wondering what does early melanoma look like? Find out what to look out for to make sure you don't have this form of skin cancer.