Senior Chief Henry remarks that Ivan "drank [Bernadette's] Kool-Aid." This phrase is a reference to the Jonestown mass suicide, which took place in 1978, several years after this episode's setting.
The chief at the border patrol asks agent Munos (Alex Meraz) , "You haven't drunk her Kool aid, have you?" referring to Bernadette. The Jonestown Mass suicide where the expression, "Drank the Kool aid" comes from didn't happen until 1978. This show is set in the early Seventies.
The locomotive shown on the train timetable is a GE 'Genesis' P42DC as used by Amtrak. The first units were produced in 1992, approximately 2 decades after this takes place in the early 1970s.