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.
To join the Army Reserve you need to be 18. You can apply to join when you are 17 years and 9 months old, so that you're ready to join on your 18th birthday. To join as a soldier, you must apply by the time you are 49 years and 11 months.