UnScramble this Word: s a e m t r u p?

Questions

He was court-martialed in 1971 for atrocities in Southeast Asia.?

In 1973 he became Los Angeles' first black mayor.?

In 1974, this became the world's tallest building.?

The first american to walk on the moon in the 70's.?

This singer starred in Clams on the Half Shell Review.?