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.
Lower respiratory (tract) infection or LTRI is a generic term for an acute infection of the trachea (windpipe), airways and lungs, which make up the lower respiratory system.LTRIs include bronchitis, croup and pneumonia.Although influenza (the flu) can involve the lower respiratory system, it is not considered among the group of illnesses referred to by the term lower respiratory infection..Lower respiratory infections are more common in the winter because people tend to stay indoors and share the same recirculated air (and germs).lthough influenza (the flu) can involve the lower respiratory system, it is not considered among the group of illnesses referred to by the term lower respiratory infection.. Lower respiratory infections are more common in the winter because people tend to stay indoors and share the same recirculated air (and germs).