Costco is selling SPAM 6 packs in Atlanta. Stock up, they last for years. SPAM the best currency you could ever offer.
mredepot.com, canned meats that are excellent and of good value.
Yes, spam is an excellent substitute for bacon, but it should be the high salt formula. The lower salt version doesn’t keep as well.
Olives and other things in brine will eat through their cans rather quickly compared to other canned goods. Corn keeps for 15 years or more, so do Garbanzo beans.