[Nadia]

"Looks threatening!" - Not really if you ask me

You haven't seen TV shows of the fifties, space horror and invaders from space in black and white such as the Twilight Zone (1959) apparently:
http://en.wikipedia.org/wiki/The_Twilight_Zone

In it is described a movie that inspired the series:
"The Time Element" (1958) is an interesting SF movie about time travel, and
events of PEARL HARBOR ATTACK; I remember that one, and I recommend it to any Pearl Harbor Attack fan from IL-2...
:o