District police officer Sean Hickman, who was the victim of a hit-and-run and then waited as a Prince George's County ambulance was dispatched to take him to the hospital, has been moved into rehabilitation, according to D.C. Police Chief Cathy Lanier.

Lanier said that Hickman has had nine or 10 surgeries, but remains in "great spirits."

"He's going to have a tough road ahead of him," Lanier said during a news conference at the National Press Club Wednesday afternoon.

Three D.C. ambulances were improperly out of service when Hickman was struck by a Lexus, forcing an ambulance from Maryland to make the trip to retrieve the officer.

"When I heard that, it was frustrating to think of a police officer laying in the street," Lanier said.

But, she said, she had empathy for Fire Chief Kenneth Ellerbe, saying she knew how difficult it can be to run a 4,000-person operation.

Three men who face charges related to the incident are scheduled to appear in court Thursday morning.

Kevin Burno has been charged with aggravated assault while armed. He is accused of driving into the oncoming traffic lane and hitting Hickman.

Darrin Twisdale and James Parks have been charged with being accessory after the fact to aggravated assault while armed.