Star Trek: TOS 1.21: "Tomorrow is Yesterday"

Maybe it's because I exist in the body-modding 21st century, but I don't quite get why people are always freaked out over Spock's appearance. Should a scowling man with a Moe Howard haircut and deformed ear tips elicit an expression of shock from a 1960s military man? Captain Christopher must also jump at his jet's shadow on the runway.

yr: 2267 / 1969
sd: 3113.2
ad: 26 Jan 1967