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COVID-19 patient Nicholas DiPompo, 78, uses an incentive spirometer to build up his lung capacity while recovering at a field hospital operated by Care New England set up in a former bank call center to handle a surge of COVID-19 patients in Cranston, R.I, Monday, Dec. 28, 2020. DiPompo spent three weeks at the field hospital recovering before being strong enough to go home. (AP Photo/David Goldman)

COVID-19 patient Art Singleton, 56, rear, watches as fellow patient Nicholas DiPompo, 78, is wheeled to the exit by registered nurses, Doris McClellan, left, and Ashley Nowlin, right, for discharge from a field hospital in Cranston, R.I, Wednesday, Jan. 6, 2021. DiPompo was finally going home. "You got my number," DiPompo shouted to Singleton, whom he'd grown close to after three weeks together. "Give me a call when you get out." He said they would go to his favorite restaurant for baked stuffed lobster. (AP Photo/David Goldman)

COVID-19 patient Nicholas DiPompo, 78, sits in the passenger seat of his niece's car after being discharged from a field hospital where he spent three weeks recovering as registered nurse Subrina Geer returns to her other patients in Cranston, R.I, Wednesday, Jan. 6, 2021. Geer, a 33-year-old nurse working here on a temporary assignment, saw the disease ravage New York City hospitals last year. This is different: "It was a breath of fresh air to see how many patients we could discharge," she said. "It's a thrill in a way compared to what I saw in New York." (AP Photo/David Goldman)

Certified medical assistant Tyler Torti takes a blood reading from COVID-19 patient Art Singleton, 56, as fellow patient Nicholas DiPompo, 78, rear, rests in his bed at a field hospital operated by Care New England set up in a former bank call center to handle a surge of COVID-19 patients in Cranston, R.I., Monday, Dec. 28, 2020. "We were at the bottom," DiPompo said of his friendship with Singleton, a pizzeria employee who had lost part of a leg to diabetes. "He had no feet, I had heart disease." (AP Photo/David Goldman)

Holiday cards decorate the wall beside the bed of COVID-19 patient Art Singleton, 56, at a field hospital set up to handle a surge of COVID-19 patients Wednesday, Jan. 6, 2021, in Cranston, R.I. The hospital asked the community to send cards to patients, as well as health care workers caring for them; more than 5,000 were received. (AP Photo/David Goldman)

COVID-19 patient Kathleen Feeney, 79, works with physical therapist Chris Collard, left, and registered nurse Edward Rojas at a field hospital operated by Care New England set up in a former bank call center to handle a surge of COVID-19 patients in Cranston, R.I, Monday, Dec. 28, 2020. Kent Field Hospital opened on Nov. 30, just before Rhode Island's infection rate became the highest in the world. Kent was using all its beds for its sickest COVID-19 patients, and needed somewhere for the overflow. (AP Photo/David Goldman)

Dr. Paari Gopalakrishnan, right, chief medical officer of Care New England's Kent Hospital, holds a morning briefing with medical staff at a field hospital set up in a former bank call center to handle a surge of COVID-19 patients in Cranston, R.I, Monday, Dec. 28, 2020. "I'd love to take half of the patients from Kent but they're too sick," said Gopalakrishnan who runs the field hospital. (AP Photo/David Goldman)

A medical team helps turn over a COVID-19 patient on a respirator inside the intensive care unit at Kent Hospital, Monday, Dec. 28, 2020, in Warwick, R.I. Kent hospital opened a field hospital on Nov. 30, just before Rhode Island's infection rate became the highest in the world. Kent Hospital was using all its beds for its sickest COVID-19 patients, and needed somewhere for the overflow. (AP Photo/David Goldman)

Nurse Lee Ann Duffy, right, writes a medication dosage on a napkin to show to her colleague Rebecca Gore who takes notes on a COVID-19 patient on a ventilator inside the intensive care unit at Kent Hospital, Monday, Dec. 28, 2020, in Warwick, R.I. Kent hospital opened a field hospital on Nov. 30, just before Rhode Island's infection rate became the highest in the world. Kent Hospital was using all its beds for its sickest COVID-19 patients, and needed somewhere for the overflow. (AP Photo/David Goldman)

Registered traveling nurse Patricia Carrete, of El Paso, Texas, walks down the hallways during a night shift at a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. Rhode Island's infection rate has come down since it was the highest in the world two months ago, and many of the field hospital's 335 beds are now empty. On quiet days, the medical staff wishes they could do more. (AP Photo/David Goldman)

COVID-19 patient Linda Cotrone, 72, of Warwick, R.I., is offered a slice of pizza by certified nephrology nurse Scarlett Santana, after a fellow patient bought pizza for the staff at a newly opened field hospital operated by Care New England to handle a surge of COVID-19 patients in Cranston, R.I, Monday, Dec. 14, 2020. Roughly 200 patients have gone through the field hospital, most spending just a few days before going home to finish recovering. (AP Photo/David Goldman)

Unit secretary Wildaliz Perez, takes a moment to pray for a sick grandfather in Puerto Rico, not from COVID-19, during a shift at a field hospital set up to handle a surge of COVID-19 patients Wednesday, Jan. 6, 2021, in Cranston, R.I. Rhode Island's infection rate has come down since then, and many of the field hospital's 335 beds are now empty. On quiet days, the medical staff wishes they could do more. (AP Photo/David Goldman)

An inmate from a nearby prison is shackled to the bed as he is treated with a ventilator for COVID-19 inside the intensive care unit at Kent Hospital, Monday, Dec. 28, 2020, in Warwick, R.I. Kent hospital opened a field hospital on Nov. 30, just before Rhode Island's infection rate became the highest in the world. Kent Hospital was using all its beds for its sickest COVID-19 patients, and needed somewhere for the overflow. (AP Photo/David Goldman)

COVID-19 patient Sall Un, 40, wheels his oxygen tank out of his room which he will take home with him as he is discharged from a field hospital set up to handle a surge of COVID-19 patients Thursday, Jan. 14, 2021, in Cranston, R.I. Un arrived at Kent Hospital's emergency room where he spent three days there in isolation heavily dependent on oxygen, before recovering enough to head to the field hospital. Eight days later he was finally discharged, walking out the backdoor to his waiting nine-year-old son, albeit with an oxygen tank in tow but on the lowest setting. (AP Photo/David Goldman)

COVID-19 patient Sall Un, 40, buckles himself in as he is picked up by his wife, Michelle Beaman, right, and his son, Bryson, 9, as he is discharged from a field hospital set up to handle a surge of COVID-19 patients Thursday, Jan. 14, 2021, in Cranston, R.I. Un arrived at Kent Hospital's emergency room where he spent three days there in isolation heavily dependent on oxygen, before recovering enough to head to the field hospital. Eight days later he was finally discharged, albeit with an oxygen tank in tow but on the lowest setting. (AP Photo/David Goldman)

Certified medical assistant Tyler Torti, left, colors with a COVID-19 patient recovering at a field hospital operated by Care New England set up in a former bank call center to handle a surge of COVID-19 patients in Cranston, R.I, Monday, Dec. 28, 2020. With low patient numbers, the medical staff pays close attention to each person: Helping them walk the corridors to improve lung capacity, stretching stiff feet, handing out ice pops. (AP Photo/David Goldman)

Registered traveling nurse Patricia Carrete, of El Paso, Texas, walks down the hallways during a night shift at a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. Rhode Island's infection rate has come down since it was the highest in the world two months ago and many of the field hospital's 335 beds are now empty. On quiet days, the medical staff wishes they could do more. (AP Photo/David Goldman)

An ambulance arrives to bring a patient to a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Jan. 6, 2021, in Cranston, R.I. Only stable, non-intubated COVID-19 patients are transferred a few miles to the field hospital, and only if they consent. Some refuse. (AP Photo/David Goldman)

A bed sits made inside Kent Hospital's intensive care unit, which cares for the sickest of COVID-19 patients, Monday, Jan. 4, 2020, in Warwick, R.I. Kent hospital opened a field hospital on Nov. 30, just before Rhode Island's infection rate became the highest in the world. Kent Hospital was using all its beds for its sickest COVID-19 patients, and needed somewhere for the overflow. (AP Photo/David Goldman)

Rehabilitiation technician Chelsea Abbenante massages the hand of a COVID-19 patient on a ventilator inside the intensive care unit at Kent Hospital, Monday, Dec. 28, 2020, in Warwick, R.I. Kent hospital opened a field hospital on Nov. 30, just before Rhode Island's infection rate became the highest in the world. Kent Hospital was using all its beds for its sickest COVID-19 patients, and needed somewhere for the overflow. (AP Photo/David Goldman)

Oxygen tanks sit inside a field hospital operated by Care New England to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. Dr. Paari Gopalakrishnan, who runs the field hospital, thought by now they'd be ready to close it down. But with the main hospital still crowded with patients - many with severe COVID-19 - it's too early for that decision. (AP Photo/David Goldman)

COVID-19 patients watch television in a common area of a field hospital set up to handle a surge of COVID-19 patients Wednesday, Jan. 6, 2021, in Cranston, R.I. Unlike in a regular hospital ward, where COVID patients can't leave their rooms, patients here are free to roam. (AP Photo/David Goldman)

Registered traveling nurse Patricia Carrete, of El Paso, Texas, takes a rest to look out a door during a night shift at a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. In a two-story office building on a busy commercial street, medical workers opened a COVID-19 field hospital late last November, just before Rhode Island's infection rate became the world's highest. While the state's infection rates have dropped, doctors are glad the field hospital is there to relieve pressure on their staffs. (AP Photo/David Goldman)

Peter Sorrow, 62, right, helps his wife, Pauline, 71, with her lunch, as they both recover from COVID-19 at a field hospital operated by Care New England to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. "We're inspiration for each other," said Peter of being able to recover next to her in what staff calls "the honeymoon suite." "Just being here cheered her up." He now helps care for her: opening a stubborn lid on her lunch, cleaning a spot of food off her gown, updating their family. (AP Photo/David Goldman)

Peter Sorrow, 62, right, receives an injection of medicine from registered nurse Naomi Barnum, while sharing the "honeymoon suite" with his wife, Pauline, 71, as they both recover from COVID-19 at a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. While both are steadily recovering, Pauline worries that COVID-19 still could take both of them. "I kind of wonder sometimes if we're going to wake up and we won't be here," she said. (AP Photo/David Goldman)

Registered traveling nurses Subrina Geer, right, and husband, Edward Rojas, of New York City, relax during a coffee and cake break while working at a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. The couple saw the disease ravage New York City hospitals last year. This is different: "It was a breath of fresh air to see how many patients we could discharge," Geer said. "It's a thrill in a way compared to what I saw in New York." (AP Photo/David Goldman)

Registered traveling nurses Subrina Geer, left, and husband, Edward Rojas, of New York City, walk the hallways during their shift a field hospital set up to handle a surge of COVID-19 patients, Wednesday, Feb. 10, 2021, in Cranston, R.I. The couple saw the disease ravage New York City hospitals last year. This is different: "It was a breath of fresh air to see how many patients we could discharge," Geer said. "It's a thrill in a way compared to what I saw in New York." (AP Photo/David Goldman)