Navy, as it regards a military unit, is not an acronym. I'm sure people have made things up, like Never Again Volunteer Yourself but there is nothing official.
SECNAV is an acronym for Secretary of the Navy
It is the second letter of 'sea' - the full version of the acronym is SEa, Air Land.
NFCU is the acronym for the Navy Federal Credit Unit. This is a banking institute specifically serving the Navy, Army, Marines, Airforce, and Department of Defence employees.
"USNS" is an acronym for "United States Naval Ship". It typically refers to non-combat or support Navy vessels, such as hospital ships, freighters, etc.
CTMON stands for Cryptologic Technician (Maintenance) Petty Officer of the Navy. His earthly name is Andy Blevins.
If the letter E is found in the acronym of a U.S. Navel ship then it is an emergency vessel.
There are many different possible organizations and businesses that the acronym ICAN could stand for. This acronym could stand for the International Cesarean Awareness Network. This acronym could also stand for the Independent Community Arts Network.
Letters that stand for parts of a name are called initials.
There is no acronym with the letters CORNER. It does not stand for anything because it does not exist. No concept or organization uses the acronym CORNER.
CLEAN stands for Comprehensive Long-term Environmental Action Navy. This is an acronym used by the United States Navy. They want everyone to be constantly keeping a tidy ship.
TLA is an acronym that can stand for many things. In fact, it is sometimes used to stand for "Three Letter Acronym". It can also stand for Texas Library Association, Textile Labour Association and a host of other things as well.
The acronym AD stands for Anno Domini.