Captain America's Shield. Dr. The shield has great aerodynamic properties: it is able to slice through the air with minimal wind resistance and deflection of path. Its great overall resilience, combined with its natural concentric stiffness, enables it to rebound from objects with minimal loss of angular momentum.
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.f you inhale toxic materials, you can injure your lungs and cause chemical pneumonia. Fungus also can cause pneumonia. In certain areas of the United States, specific fungi are well known. Coccidioidomycosis causes a pneumonia called San Joaquin fever or  Valley fever  in the desert regions of California.
1 Pneumonia may be caused by viruses, bacteria, or fungi. 2  The most common bacterial type that causes pneumonia is Streptococcus pneumoniae. 3  Signs and symptoms of pneumonia include. 4  fever, 5  chills, 6  cough, 7  shortness of breath, 8  fatigue.