Misc: In 1942 Aretha ---------- (in Detroit, MI), singer, born.?

Questions

What were the lone three fighter planes which defended Malta in World War II nicknamed?

In Greek mythology, what were Medusa, Stheno and Euryale collectively known as?

Which East African leader gave himself the title of 'Conqueror of the British Empire'?

For what principal purpose are UHF radio waves used?

Four European countries keep Greenwich Mean Time. The UK and Ireland are two, name either of the others?