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 an infection of the lungs. People with pneumonia often complain about coughing, fever, shaking chills, and shortness of breath. 1  Your body's immune system usually keeps bacteria from infecting your lungs.2  In pneumonia, bacteria reproduce in your lungs, while your body tries to fight off the infection. The most common way you catch pneumonia is to breathe infected air droplets from someone who has pneumonia. 2  Another cause is an improperly cleaned air conditioner. 3  Yet another source of infection in your lungs is spread by an infection from somewhere else in your body, such as your kidney.