WASHINGTON (AP) — Defense Secretary Lloyd Austin is vowing he “won’t let grass grow under our feet” as the department begins to implement new vaccine and testing directives.

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But Pentagon officials are scrambling to figure out how to implement the changes across the vast military population and determining which National Guard and Reserve troops would be affected by the orders.

The Pentagon has two missions: It must develop plans to make the vaccine mandatory for the military, and also has to implement new requirements for federal workers who will have to either attest to a COVID-19 vaccination or face frequent testing and travel restrictions.

LOOK: Answers to 30 common COVID-19 vaccine questions

While much is still unknown about the coronavirus and the future, what is known is that the currently available vaccines have gone through all three trial phases and are safe and effective. It will be necessary for as many Americans as possible to be vaccinated in order to finally return to some level of pre-pandemic normalcy, and hopefully these 30 answers provided here will help readers get vaccinated as soon they are able.