One of the most interesting things about the trailer is that the bunker the characters live in appears entirely devoid of digital technology - the soundtrack (Tommy James And The Shondells' aptly named I Think We're Alone Now) is played diegetically by a retro jukebox and the inhabitants never use anything approaching high-tech entertainment. This is all instantly apparent from the first shot of the jukebox, setting up the forced-period stylings in what is presumably a modern-set movie. I'm willing to bet that stems from digital tech being useless following whatever's gone on outside.