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.
Basal cell carcinoma is the most common type of skin cancer. It usually occurs on areas of the skin that have been in the sun, most often the nose. Often this cancer appears as a raised bump that looks smooth and pearly.heck with your doctor if you notice any changes in your skin. Signs of nonmelanoma skin cancer include the following: 1  A sore that does not heal. 2  Areas of the skin that are: 3  Raised, smooth, shiny, and look pearly. 4  Firm and look like a scar, and may be white, yellow, or waxy. 5  Raised, and red or reddish-brown.