water guns
No. Certain items (including weapons) are standard issue, and that's what you get. If you have an interest in operating a certain weapons system, you can express an interest, and maybe your chain of command will consider it, but, otherwise, you get issued with whatever they decide to issue you, dependent on your function in your unit and that unit's MTOE.
Technologically plus a navy plus a much larger airforce, but in personal weapons, not really
The term "NAR" doesn't refer to a Navy ship - it's the standard Navy acronym for Naval Air Reserve.
There is not going to be a direct transfer. It may be possible to enlist in the US Navy. Security clearances are going to be an issue, as non-citizens are very restricted on the ratings they can be a part of.
you earn money from former missions
GM Gunners Mate (Navey) GI General Issue (Army)
Colt 44
The US Navy soon recovered from Pearl Harbour and carried the war to the enemy. Carriers and their aircraft were far reaching, potent weapons and US submarines were also extremely effective.
The SEALs are a branch of the US Navy. They are a specialized component with a very specialized mission. The other parts of the Navy support their mission, usually through transport for insertion and extraction. They can also provide targeting information for Navy aircraft and ship based weapons.
The standard US jet averaged about a million dollars apiece.
Beretta M9 9mm
Actually all 3 major branches of the military ( Air Force, Army, Navy with Marines) have nuclear weapons. So it isn't depended upon which branch you are in but what your duties are.