Their prior service will decide that. If they were discharged with an Honorable Discharge, there should be no issue, as long as they are still healthy. There is usually a comment on the DD214 that references re-enlistment status.
You can, but it depends entirely on what your prior Navy and Army rates were, as well as your rank. Remember that everything is based on the needs of the Navy; right now they're looking at cutting back jobs, but if you're qualified in a critical rate they'll likely snap you up in second. Don't forget also about your time out - usually after a year or more they'll drop you a stripe.
Go back to the same place
The Navy has accepted prior service personnel in the past. You would need to contact a Navy recruiter for specifics.
They will reenter the building when the microwave fire is extinguished.
Man designated to light, extinguish and maintain lamps in the navy (prior to electricity).
Yes
5 minutes prior to TAPS or lights out
yes a goalie can reenter a game after being substituted for.
Dreadnoughts.
David Robinson
John F. Kennedy was discharged from the US Navy in early 1945.
There is an extensive list of requirements you must meet prior to joining the Navy. The Navy has a webpage dedicated to these requirements: http://www.navy.com/about/before/enlistmentstandards/#requirements