In warfare, airports can become the focus of intense fighting, for example the Battle of Tripoli Airport or the Battle for Donetsk Airport, both taking place in 2014. An airport primarily for military use is called an airbase or air station. Most of the world's airports are owned by local, regional, or national government bodies.
Age of viability. The age at which a premature baby can survive outside of the uterus. The age of viability occurs sometime between 22 and 26 weeks, usually when the weight is greater than 500 grams. The probability of survival is slim at 22-23 weeks, but increases to approximately 85% at 26-28 weeks. Respiratory problems are the most common complications that a preterm infant experiences.
Fetal viability. Fetal viability or foetal viability is the ability of a fetus to survive outside the uterus. Contents. Definitions. As the word is used in United States constitutional law since Roe v. Wade, viability is the potential of the fetus to survive outside the uterus after birth, natural or induced, when supported by up-to-date medicine.