PHOENIX — Gov. Doug Ducey wants federal dollars and an expanded role for the Arizona National Guard, saying the citizens, economy and infrastructure of the state have been “catastrophically affected’’ by COVID-19.

“The State of Arizona resources are being overwhelmed and additional federal funding is critical,’’ Mr. Ducey wrote in a letter Friday to Defense Secretary Mark Esper. “This event has caused and continues to cause widespread effects (both known and unknown).’’

The governor’s letter went out Friday, the same day he and Maj. Gen. Michael McGuire held a press conference to explain the role that Guard troops, called out by Mr. Ducey the day before, would play.

Both emphasized they were there for logistical support, largely to help restock the shelves of grocery stores, which had been stripped bare of many items by people who were hoarding.

“We can do big-scale logistics,’’ said Mr. McGuire, the adjutant general of the Arizona National Guard. He said that particularly means moving large quantities of food “that final mile’’ between warehouses and grocery stores.

What was not mentioned at the time was that Mr. Ducey was telling Mr. Esper that he foresees the need for up to 5,500 troops and an even larger role for the Guard, including:

• Providing hazmat protective equipment to hospitals which now have “inadequate and uni-sized protective gear;’’
• Assembling and preparing field hospitals to treat those with non-COVID-19 conditions to allow hospitals to focus on those with the novel coronavirus;
• Providing a reserve of medical providers.

But Mr. Ducey said it may not stop there, saying troops could provide “additional assistance (which) may also include future support to local law enforcement."

The governor said, though, duties would include those “not impeded by Posse Comitatus," an 1878 law, which prohibits the use of the military to enforce the law or suppress civil disorder unless expressly ordered to do so by the president.

But the governor said that those limitations do not apply when Guard troops are “under state command and control.’’

Mr. Ducey did not explain what role he wants them to play but only that they are needed — and the federal government should come up with some cash.

“The citizens, economy and infrastructure of the state of Arizona catastrophically affected by COVID-19 ultimately affects the citizens, economy and infrastructure of the nation,’’ the governor wrote. And he said that without federal funding “Arizona will be incapable of quelling the risk to the state and nation.’’

Gubernatorial press aide Patrick Ptak denied late Sunday that his boss was withholding information from the public about conditions in Arizona or the role Mr. Ducey wants the Guard to play.

“This letter is intended to secure an offset from the federal government for National Guard activity here in the state,’’ he said. And Mr. Ptak denied that his boss is either not telling the whole story to Arizona residents or to the Pentagon, whose dollars he is seeking.

“We’ve been straightforward about what we expect them to do,’’ he said, calling the letter and the verbiage “something we have to do’’ to draw down federal dollars.

“The governor has been very transparent about Arizona’s COVID-19 response, including daily press briefings last week,’’ Mr. Ptak said.

When Mr. Ducey wrote the letter to Mr. Esper, he told the Pentagon chief that Arizona had 44 confirmed cases and no known deaths.

As of Sunday afternoon that number had reached 152 with two deaths.