Statute of Limitations on Military Aircraft

I've always wondered if I located an ex-military aircraft either in a lake, ocean, private property, state or national park or dug one up in my back yard, what are the rules of engagement. Also if I had a grandfather (which I don't) that had a Corsair covered for years in his barn, could the government come get it if it didn't have any paperwork anywhere. How about if you found an old wreck on your farm that had been sitting there for years with no way to really trace how it got there, you take that wreck and restore it to airworthy condition. Could Uncle Sam come take it away from you? ... I know we have discussed this a bit before, but I couldn't find the thread. I did find this link below to be interesting.

http://www.history.navy.mil/branches/org12-12a.htm

[Canso42]

I'm not expert but from what I've heard since being involved with warbirds is that the AF or USAAF are generally agreeable but the Navy is guaranteed to 'get ignert'.

Canso42

[O.P.]

From what little I know, The Navy owns everything underwater everywhere. Regardless of the service

If it's out of water, and not Navy, and not on goverment lands, or in a foriegn country.....ehhh, you might have a chance. A small one, but a chance.

[Forgotten Field]

The Navy owns everything underwater everywhere

The USN asserts this, but international salvage law (which has a very long history of being held up in courts around the world) asserts otherwise...

[armyjunk2]

From dealing with Armor and Artillery, TACOM (Tank and Artillery Command) in Warren, MI says they own all tanks and artillery in the US unless you have a clear title to it. VFW's and Legions almost never own the display out front. They might have paid to transport the display but the Army still owns it. That's what they say