The Clutch is a number buildings found in The Rime Woods used by VIPER to create the perfect super-soldier. Only one of the building can be entered.
The Clutch is located in the The Rime Woods in the Canadian Wilderness and it is marked on the ingame map with with a VIPER insignia.
Pop the Clutch
VIPER's Supersoldier Program - Report: Recruitment in Millennium City
VIPER Recruitment - Damnation in the Desert!