The end of the government shutdown sent relieved federal employees back to work as usual at airports, prisons and other sites Saturday.

At LaGuardia Airport, where some flights were halted Friday due to a shortage of air traffic controllers, lines were at normal lengths and calm seemed to pervade.

“I was actually expecting it to be crowded today, after yesterday’s delays,” airport employee Bryand Cardenas observed. “But it’s been a slow day.”

About $6 billion in wages are owed to all federal employees—both “essential” workers who stayed on the job and furloughed ones who stayed home during the 35-day shutdown. Lump-sum payments will be doled out by the end of the week, federal officials promised.

“They said it’s all processing, so fingers crossed,” said a Transportation Security Administration worker at LaGuardia.

The nine federal departments and numerous other agencies that were shut down during the recent budget impasse will reopen in fits and starts over the next several days. Most employees will resume work Monday.

Some National Park Service facilities swung back into gear right away.

“We’re here like any Saturday,” said a ranger at Manhattan’s Theodore Roosevelt Birthplace, which had been shut down.

Other sites, like the National Mall in Washington, D.C., remained closed Saturday for cleanup and evaluation. The museums of the Smithsonian Institution, including its two New York City outposts, will reopen Tuesday.

At the Metropolitan Detention Center, a federal prison in Brooklyn, employees said the shutdown had been stressful.

“Maybe 35 percent” of officers had been skipping out of their unpaid shifts, one worker estimated. “They just can’t make it. They can’t make it because they can’t pay the tolls or the gas… nobody can say it’s not true. It’s a valid excuse.”

Under the temporary funding bill passed Friday, federal workers who’d missed out on two paychecks will get their regular salaries Feb. 8 or 9. But payroll money could dry up during the pay period after that if lawmakers do not agree on new spending legislation.

“Everyone is worried” at the prospect of a second closure, a female corrections officer said.

“I feel that for my brothers and sisters in blue … we have to protect our country,” she said. “But at what cost? We’re all banding together for the greater good of our country.”

President Trump stated, “negotiations with Democrats will start immediately.”

In spite of his repeated strong demands, last week’s deal included no funding for a wall on the southern border.

But the president on Saturday repeated his calls for tougher border security.

“Build the wall and crime will fall!” he tweeted in all-caps.

“Only fools, or people with a political agenda, don’t want a Wall or Steel Barrier to protect our Country from Crime, Drugs and Human Trafficking,” he added.

Workers fear a second shutdown if Congress and Trump don’t reach a deal at the end of the temporary funding period, which ends Feb. 15.

A Metropolitan Detention Center worker said lawmakers should shoulder the burden themselves if they can’t reach a deal.

“Personally, I think the next time they want to do a government shutdown, they should cut Congress’s funding first,” the worker said. “They don’t want to figure it out? Cut their funding.”