The US was already geared for war, that's what the cold war was all about. However, US tactics and machines of war had to be modified somewhat for the Vietnam War.
Modern meteorologists use the numerical weather prediction method.  This method uses mathematical smulations of the earth to predict  the weather. A number of simulations ar â¦ e run in different countries  worldwide, using weather observations relayed from weather  satellites and radar as inputs to the simulations.
Meteorologists measure changes in air pressure using barometers. High- and low-pressure weather systems move across the country, resulting in changes to barometric pressure. The position of atom and air molecules in the system mark the difference between high- and low-pressure weather systems.