https://www.whitehouse.gov/briefings-statements/statement-national-security-advisor-robert-c-obrien-011521/

https://www.ntia.gov/5g-implementation-plan

https://www.ntia.gov/files/ntia/publications/2021-1-12_115445_national_strategy_to_secure_5g_implementation_plan_and_annexes_a_f_final.pdf