In a video obtained by CBS News, Shaver is greeted with applause by law enforcement as he prepares to leave the hospital. The extent of his injuries is unknown, but Shaver is seen wearing shoes that tighten the limit on his left leg.
Shaver was injured and Capitol Police Officer William "Billy" Evans was killed when the driver crashed his car into their home on a barricade outside the Capitol building on Friday. The 25-year-old suspect, Noah Green, was shot by police after he got out of his car and alerted police. He died at a local hospital.
The Capitol incident happened three months after an incident on January 6 in the building, which found officials were full of violent mobs of supporters of former President Donald Trump. One Capitol police officer, Brian Sicknick, died after being injured in the attack, and a second, Howard Liebengood, died by suicide after days of violence.
Gus Papathanasiou, chairman of the Capitol Police Union, said on Saturday last week's attacks and violent attacks on January 6 "had left our police officers in shock," and urged law enforcement to tighten security at the Capitol.
"We have now lost two police officers who were on duty this year," he said in a statement. "One police officer has committed suicide and we have 80 police officers seriously injured during the uprising. Some of the injured officers may not return to work."
According to an official police figure of 2,072, Papathanasiou said the Capitol's 233 police officers were below that level and "strived to meet the current demands of the job even when officers are working overtime."
He warned that the door could be cut short, as another 500 police officers would be able to retire in the next three to five years.
"Most of these officers can file their retirement papers tomorrow," Papathanasiou said. "I've had a lot of young officials who confide in me that they are looking at other structures and departments right now."
"Capitol police in a statement responded to those concerns" thank you and we are sharing the support of the union with additional recruitment, retaining our current authorities and making many improved security measures as soon as possible. "
Following the January 6 attacks, a review ordered by House Speaker Nancy Pelosi found that Capitol police were "adequately staffed, and not adequately trained to protect the Capitol and its members when they were violently attacked by a mob."
Led by retired Lieutenant General Russel Honore, the team found that the department was not strong enough to deal with the increase in reported threats and recommended that the department fill 233 vacancies, and recruit another 350.
In an interview with ABC News' "This Week" on Sunday, Honore urged Congress to act swiftly on the recommendations contained in his report, most importantly to provide additional resources, including the recruitment of new Capitol police officers.
"It's time for Congress to use this program. We've given them a plan. We've worked hard to give it to them. Now they have to work to make that plan a reality," he said, we need to step up our game to support the Capitol Police. "