
1) Special force of Russia
Found on
https://www.crosswordclues.com/clue/vityaz
[MVD] Vityaz (Витязь, `Knight`) was one of the Soviet and Russian special forces units of the Ministry of Internal Affairs (MVD) within the Independent Operative Purpose Division (ODON) of the Internal Troops (VV). Its full name is 1st Special Purpose Unit of the Internal Forces `Vityaz` (1-й отряд специального на...
Found on
http://en.wikipedia.org/wiki/Vityaz_(MVD)

(from the article `Mariana Trench`) ...Guam. This sounding was not exceeded until a 32,197-foot (9,813-metre) hole was found in the vicinity 30 years later. In 1957, during the ...
Found on
http://www.britannica.com/eb/a-z/v/31
No exact match found.