The first three points I'd require prior to proceeding from behind this computer:
1. A copy of the sponsor's permit to salvage, recover, distribute and bring the goodies back to the States;
2. An opinion from the promoter's attorney that all legal requirements have been fulfilled, including permission from INAH; and
3. A recovery plan. Sonar may detect, but who/how and with what equipment will the goodies be salvaged?
The list could continue to fill the page, but I'll stop there.
Don.....