Check with the local VFW or American Legion hall if they have a display tank. They can tell you where to go to ask about it.
Also AmVet's (similar to VFW and American Legion)
and possibly your local Veterans Affairs and/or your local US Veterans Representative Organization
Have you tried Googling?
Sounds like a Wonderful thing you're wanting to do, you might also could try contacting other longtime reputable Military Schools... Similar to "Oak Ridge Academy" here in North Carolina
Good Luck and hope this is helpful
~S~
TC