They had to pull all the private contractor for security off the job due to illness. Replaced by S Korean military.
I am living in S Korea. \
https:// www.sbnation.com/2018/2/6/16978470/winter-olympics-pyeongchang-2018-norovirus-outbreak
SEALs presently deployed into Asia out of 7th Flt HQ out of Yokosuka, Japan:
Currently, NSWU-1 maintains operational control of five forward deployed SEAL platoons and two SBU Rigid Hull Inflatable Boat (RIB) Detachments. NSWU-1 is under the administrative command of Naval Special Warfare Group ONE, but operationally reports to Special Operations Command, Pacific and US Navy Seventh Fleet for operational tasking. NSWU-1 provides operational support to forward deployed platoons and conducts theater planning for contingencies and exercises for Naval Special Warfare forces in the Pacific area of operations. https:// fas.org/irp/agency/dod/socom/sof-ref-2-1/SOFREF_Ch4.htm