At least three ribbons on the Army Captains uniform were not in existence until 2001
In this Episode before Pops goes into the timeshare meeting with Adam , he says they will score tickets to Mad Max Beyond Thunder Dome.
Later, Erica tells Adam that Pops is 80 years old and was born in 1903 which would make it 1983. Mad Max Beyond Thunder Dome didn't come out till 1985.
Adam's tees: Queen, Pops is wearing a Frankie Goes to Hollywood t-shirt.