precipitation in Culture. In meteorology, the fall of water, ice, or snow deposited on the surface of the Earth from the atmosphere. In chemistry, a chemical reaction in a solution in which a solid material is formed and subsequently falls, as a precipitate, to the bottom of the container.
Join Today! In the United States Air Force, the maximum age allowed to enlist and ship to basic training is 27 years old. In the Air Force Reserves, the maximum age is 34 years old. In the Air National Guard, the maximum age is 39 years old.
Fundamental Requirements. Army enlistment guidelines stipulate that you must be between the ages of 17 and 34, with at least a high school diploma. However, joining prior to age 18 requires consent from a parent or legal guardian. You must be in good physical health and pass a series of test to prove it.