Title: United States Army.
Question: What type of ambulance will the Army have 301 of?

Title: Planck constant.
Question: In what year did Planck receive the Nobel Prize in Physics for his discovery of energy quanta?

Title: Miami.
Question: From what country did people notably emigrate to southern Florida in the 1980s and 90s?

Title: Wood.
Question:
What part of a tree often stays impressively sound even when hundreds or thousands of years old?