Misc: who kept searching for his long-lost salt shaker?

Questions

In 1960 First atomic aircraft carrier, the "USS ---------- ", is launched. ?

In 1964 "---------- " premier. ?

In 1970 First Automated return of lunar sample by---------- . ?

In 1513 ---------- Nuez de Balboa is the first European to see the Pacific Ocean. ?

In 1513 Vasco ---------- de Balboa is the first European to see the Pacific Ocean. ?