Misc: Instrument for measuring wind force?

Questions

When Saigon fell, the signal for all Americans to evacuate was this Bing Crosby song playing on the radio?

A word like 'NASA' formed from the initials of other words is a(n) _________?

What nation moved its borders eastward and named an islandMillennium Islandin order to be the first nation to welcome the new millennium?

This french actor appeared in 'The Big Blue' and 'The Professional'?

Hammer, anvil, and stirrup are parts of the ______?