With few special exceptions, no. You would have to complete your Air Force contract first.
As for the exceptions, we'd be talking about something like attending and completing BUD/S as an Air Force service member, then transferring to a SEAL team.
not to my knowledge
No, but why would you want to?
Talk to a Navy recruiter.
You can be called to active duty.
The Difference between the Navy and the Navy Reserves is that Navy is Active duty. This means that naval personnel belong to, work for, and get paid by the Navy 24 hours a day. Navy Reserve personnel are civilians most of the time. They work for the navy 1 weekend a month and 2 weeks out of the year. The rest of the time they lead what ever life they want. The Navy reserves is like the US Navy's savings account of personnel. When they do not have enough people to support a mission, they call navy reserve personnel to active duty to fill in the gaps. Naval Officers commissioned through the NROTC program may receive their commission into the Naval Reserve or the regular Navy. Those in the reserves will serve on active duty for four to six years before being transferred to a reserve unit near where they are going to live. While there are those who go directly to the Naval Reserve right out of BT, the vast majority of Reservists (myself included) are, or were, active duty Navy sailors at some point, most being either officers or NCO's. Individual Reservists can also be called to Temporary Active Duty, in lieu of an entire unit. This is done in cases where the sailor has unique skills or qualifications necessary for the mission requirements.
Absolutely - all Midshipmen are actually in the Navy and on active duty from the moment they take the oath and swear in before attending. All those who graduate are required to give at least 4 years of Navy service in addition to their Academy time.
base pay is from 50000-60000, but that tends to go up very easily when you're on active duty.
no you cant
Yes
They go to jail
Not intentionally. Yes, people die on active duty in the US Navy. Shipboard accidents are always a danger. There are currently combat deaths for those serving with the US Marines and SEAL teams. Even a routine training mission can go bad and result in fatal injuries.
No the military PO is no longer in effect as long as you do not go on base. If you go back on base due to the fact that you still hold a military ID the military police can still arrest and charge you.