The CDC took nearly two years to formally recognize distinctions between masks for mitigating COVID-19 spread, finally saying in January that cloth masks offer "the least" protection and N95 respirators, which meet strict federal standards, "the highest."
“I gave up my command; I gave up my career; I gave up my retirement pension. But I still think I came out a winner because, after 19 years of service, I left the army with my integrity intact, and my oath to the Constitution unbroken."