After CW3, the next level of the Warrant Officer ranks is Chief Warrant Officer 4 (CW4). CW4's stand even more experienced tactical and technical experts in their specific military craft than CW3's.
Cancer is a disease in which cells in the body grow out of control. When cancer starts in the lungs, it is called lung cancer. Lung cancer begins in the lungs and may spread to lymph nodes or other organs in the body, such as the brain. Cancer from other organs also may spread to the lungs.When cancer cells spread from one organ to another, they are called metastases.ung cancer begins in the lungs and may spread to lymph nodes or other organs in the body, such as the brain. Cancer from other organs also may spread to the lungs.
Pneumonia is inflammation of the lung usually caused by bacterial or viral infection (rarely, also by fungi) that causes the air sacs to fill with pus. If inflammation affects both lungs, the infection is termed double pneumonia. If it affects one lung, it is termed single pneumonia.here are many other descriptive terms, such as community-acquired pneumonia, hospital-acquired pneumonia, and aspiration pneumonia (examples that suggest the source of the organism[s] causing the pneumonia). They are all potentially contagious.