Infiltration of the Tian Shan Mountain Base

The Infiltration was a mission conducted by John "Soap" MacTavish and Gary "Roach" Sanderson in the Tian Shan Mountain Range, Kazakhstan. Task Force 141 discovered that Ultranationalists acquired a downed American satellite; Soap and Roach were ordered to acquire the ACS module to ensure Russia can gain no useful information or advantage from the satellite.