An Investment Banking job does job require formal training. For example, investment banks recruit new hires from colleges from any major. A college degree is key. A Master's in Business Administration (or MBA) is looked upon very highly in the industry!
To become an investment banker, one must first usually obtain a business degree, preferably an MBA. Then one needs to find an entry level job with an investment bank to get a foot in the door.
Profit
To obtain the CFA qualification, 48 months experience is required which may involve evaluating financial economic statistical data as part of investment decision making or supervising or training others in carrying out such activities within an external organisation.
Full medical degree plus additional training is required to obtain a license as an anethesiologist.
The word 'banker' is too broad, if you want to become a professional in the banking industry you need to become an accountant, mortgage, or derivative specialist etc. Thus you need to obtain training in one of the banking related professions.
This depends on your state and the special license you have to obtain. In general, the training takes 6 months.
Typical training and college classes such as electricity and wiring are required to obtain a degree in HVAC repair; however, each school is different so it's best to check on the school itself.
Firefighters get training in many different areas in order to perform their jobs functions properly. They are usually required to obtain an EMT or paramedic certification.
Yes, you must obtain an undergraduate degree. In addition, 2 years of training is required.
AFRIT
It depends on what you mean. For shooting guns, in the U.S. for the most part, no training is required to go to a public range and shoot a gun. Some training is required in most, but not all, U.S. states in order to obtain a handgun carry permit. In general, learning to shoot involves learning how to properly align the sights and properly manipulate the trigger.
You will most probably need to obtain a Commercial Drivers License in order to have the best opportunities.