Yes it is perfectly legal.
That's sort of a gray area. The answer, I believe, is that they are legal to buy and own but not legal to conceal and carry. One handed opening knives like tactical folders, that open via the use of a thumb stud or thumb hole with a blade that is less than 5" are perfectly legal to own and carry in NJ. However knives that open via a switch or button such as spring assisted folders or switchblades are totally illegal in NJ. It is possible to buy butterfly knives in Army Navy surplus stores in NJ but such stores do not sell switchblades, so I am assuming it is legal to buy butterfly knives in NJ, otherwise I don't think these stores would risk selling them.
What kind of contract? A contract to produce goods, or supplies, or services, for the Army -OR - an enlistment contract? For the former you wuold have to go through a legal process, for the latter, no.
Despite overwhelming evidence suggesting a low likelihood of abuse and lack of long term harm from non-regular use, most are deemed dangerous by the government. The US army once gave LSD(lysergic acid diethylamide) to someone unaware and the person ended up jumping out of a window. The US government deems that dangerous. However there are drugs that are legal. For example Salvia, Blue Lotus, and a bunch of drugs found in some cactus are legal in the US for the most part. If you get into these legal drugs make sure that they are legal where you live, laws can vary from state to state in the US. If you disagree with laws then do all you can to get them changed, There are other people that think the same thing.
A heer may have been in the Army.
Continental army
it is legal to carry a knife there but not switchblade or butterfly.
a Swiss army knife is called 'un couteau suisse' in French.
A Swiss army knife is made of stainless steel.
No matter how many features a Swiss knife has it's still a Swiss knife
There are you
One can purchase a military knife in many different locations such as online examples are Swiss Army knife also Amazon sites. One could go to there local mall such stores as Sears and the Bay may carry Swiss Army Knives.
The swiss army knife actually originated in Switzerland. It was made for the Swiss army to take out with them because it functioned as so many other things.
Swiss Army Knives are legal, providing the blade is under 3 inches. "Knives where the blade folds into the handle, like a Swiss Army Knife, aren't illegal as long as the blade is shorter than three inches (7.62 cms)" - http://www.direct.gov.uk/en/CrimeJusticeAndTheLaw/CrimePrevention/DG_078569 Skiny
In Neptune
A typical swiss army knife will have different tools available for use on it. Some of these tools will be things like a knife, screw drivers, scissors, a file, cork screw, a saw and many more. A swiss army knife will be well made and durable.
Swiss army knives can be found online and in several stores. Amazon and Sears both carry them, although Amazon is likely to be cheaper. Online shopping is easy and convenient.
Your question's a little vague: 1. The knife is a real knife (it exists and will cut things) 2. The knife is NOT a "Swiss Army" knife - that title belongs to Victorinox AG