Myocarditis can be caused by a variety of infections and conditions such as viruses, sarcoidosis, and immune diseases (such as systemic lupus, etc.), pregnancy, and others. The most common cause of myocarditis is infection of the heart muscle by a virus.The virus invades the heart muscle to cause local inflammation.he most common cause of myocarditis is infection of the heart muscle by a virus. The virus invades the heart muscle to cause local inflammation.
The onboard electronics are hardened to protect against an electromagnetic pulse, and Air Force One is equipped with advanced secure communications equipment, allowing the aircraft to function as a mobile command center in the event of an attack on the United States.
DEFENCE NOTES. Columnist Syed Imran Shah gives an analysis of future air operations in light of past experience and modernisation of equipment. Counter-air is an air operation of a tactical air command conducted to attain and maintain a desired degree of air superiority by the destruction and neutralization of enemy forces. Both air-offensive and air-defensive actions are involved. But we shall focus on air-offensive actions and counter-air interdictions.