I guess these might sell well to people who don’t understand the concept of “half life”.
Metal shelters + intense heat = baked people
Do they include a special sauce with them?
Hiroshima was mostly rebuilt and re-inhabited by 1947
https://davidson.weizmann.ac.il/en/online/askexpert/recovery-time-nuclear-disaster
The radiation from an airboat mostly dies down within a few weeks.