Cumpton also said the national guard has taken an aggressive approach to preventing the spread of COVID-19 within its own ranks. It has been following federal guidance and screening all service members who enter the state's armories and training sites, he said.

Parson’s office said he made the decision to mobilize the guard after consulting with officials in the state Department of Public Safety, Department of Health and Senior Services and the State Emergency Management Agency.

“The COVID-19 crisis is constantly developing and changing, but we are taking steps each and every day to slow the spread and protect public health and safety,” Parson said in a statement. “Mobilizing the National Guard will help us provide more immediate resources to our citizens and enhance Missouri’s ability to overcome this global pandemic.”

At Friday's briefing, Parson said his decision isn't about putting Missouri under martial law. It's about supporting local communities, just like during the last year's floods, he said.

"The guard is prepared to answer this call again and step in to help wherever they are needed during this crisis," Parson said.

Parson's order expires May 15 unless he chooses to extend it.