Whole nine yards

Phrase equivalent to "Everything that is available." Has nothing to do with football. In fact, the phrase comes from the fact that fighter planes are equipped with belt-fed machine guns. When the belts are laid out before loading, they measure nine yards in length. If a pilot were to empty his plane's guns into a target, he'd be giving it the "whole nine yards."

Used since the 18th century to describe a ship.
'Ship' is a pretty homogenous term these days, but back then, to describe a vessel as a 'true' ship, it had to have 3 masts (fore, main, and mizzen) and on each of these were 3 sails (main, top, and topgallant) suspended from horizontal 'yards'. To handle so many sails, a fairly large crew is required. Warships carried much, much larger crews than merchantmen, and so it was only warships and the large, prestigeous merchant ships such as East Indiamen that could be described as having 'the whole (or full) nine yards'.

This is not about the airforce, football or even the clothing industry; The Whole Nine Yards refers to the amount of conrete that was in the original concrete trucks (9 cubic yards).

The actual origin of the phrase "the whole nine yards" originates from late 19th century explosive mining methods, where a "whole nine yards" of safety fuse would be used(The maximum length that could be reliably used without burning out before igniting the dynamite) in the case of a huge detonation, hence longer fuses give you more time to get the fuck out of there.

Giving it all, taken from WW2 B-17 gunners who had a string of bullets that fed into their guns that measured nine yards long

A term dating back to World War 2 referring to a fighter pilot using up all of his ammunition attempting to bring down an enemy plane, the ammunition belts the guns used being nine yards in length on average, hence the term.

The length of a belt of machine-gun ammuition used in some WWII fighter plains