Misc: What is the maximum number of consecutive terms that a US president can now serve?

Questions

23 March 1970 US performs ---------- test at Nevada Test Site ?

25 March 1970 ---------- makes its 1st supersonic flight (700 MPH/1,127 KPH) ?

26 March 1970 500th ---------- announced by the US since 1945 ?

27 March 1970 ---------- releases his 1st solo album "Sentimental Journey" ?

27 March 1970 ---------- performs nuclear test at Eastern Kazakhstan/Semipalitinsk USSR ?