I think they'll survive by unrealism. Seriously the producers went way too far by releasing multiple warheads. If they would have just one nuke hit the earth, maybe the characters could survive with enough distance wiithout being too unrealistic. But there were more explosions. We just can see who survived right now. And even all those survivors can still die of radiation sickness or other diseases caused by radiation like cancer, which can't be treated in the apocalypse. It's just wild. Too wild imo
