This happens because the temperature at which oxygen changes from a gas to a liquid is about 13 degrees Celsius above that of nitrogen. The oxygen can be seen dripping from the can just as on a humid day you can see drops of water condense and drip from a can you take from the refrigerator.
Though you technically can join the military up to age 42, if you're 35 or over you'll need an age waiver if you've never been in the military before.
To join as an enlisted member, you must be between the ages of 17 and 34. However, if you're only 17, your parents must consent to your joining the Navy. United States citizenship or permanent resident alien status is required. If you donât have a high school diploma, a general equivalency diploma is acceptable.