The Davy Crockett was deployed from 1961 to 1971, so we're talking '60s era tanks. There's a reason that modern tanks are radiation shielded, and similarly why

The Davy Crockett was deployed from 1961 to 1971, so we're talking '60s era tanks. There's a reason that modern tanks are radiation shielded, and similarly why tactical nukes are no longer considered part of tank warfare.