Biden will move to release more doses of the COVID-19 vaccine when he takes office, a departure from the country's current procedure of withholding 50% of the supply to ensure second doses of the two-shot vaccine are available, a transition official said Friday.

“He supports releasing available doses immediately, and believes the government should stop holding back vaccine supply so we can get more shots in Americans' arms now. He will share additional details next week on how his Administration will begin releasing available doses when he assumes office on January 20th,” Biden spokesperson TJ Ducklo said in a statement.

A transition official told ABC News they have faith manufacturers can produce enough vaccines to ensure people can get their second doses in a timely manner, while also getting more people their first doses.

The official also noted the Biden administration has long pledged to use the Defense Production Act as needed to help produce materials to ensure supply.

-ABC News' Molly Nagle and Anne Flaherty

In a short statement, Col. Dave Butler, spokesperson for Chairman of the Joint Chiefs of Staff, confirmed the nation's top Gen. Mark Milley and House Speaker Nancy Pelosi spoke on the phone.

"Speaker Pelosi initiated a call with the chairman. He answered her questions regarding the process of nuclear command authority," Butler said.

Pelosi told her Democratic colleagues in a letter earlier Friday she reached out to discuss "available precautions" for preventing Trump "an unstable president" from accessing the nuclear launch codes or initiating military hostilities before he is out of office in 12 days.

-ABC News' Matt Seyler

A Twitter spokesperson said in a statement Friday: “In line with our statement yesterday, any future violations of the Twitter Rules, including our Civic Integrity or Violent Threats policies, will result in permanent suspension of the @realDonaldTrump account.”

The social media platform on Wednesday removed a video of Trump telling Capitol Hill rioters "we love you" and to "go home," requested the removal of three of Trump's tweets and slapped a 12-hour lock on Trump's account by Wednesday night.

"If the Tweets are not removed, the account will remain locked," the company added in a Tweet on its verified safety account at the time.

A Twitter spokesperson told ABC News on Thursday morning that Trump’s tweets were deleted.

-ABC News' Ben Gittleson

House Speaker Nancy Pelosi a letter to her Democratic colleagues said she reached out to the Chairman of the Joint Chiefs of Staff Mark Milley Friday morning to discuss "available precautions" for preventing Trump -- "an unstable president" -- from accessing the nuclear launch codes or initiating military hostilities before he is out of office in 12 days. She doesn't elaborate further on their discussion.

"This morning, I spoke to the Chairman of the Joint Chiefs of Staff Mark Milley to discuss available precautions for preventing an unstable president from initiating military hostilities or accessing the launch codes and ordering a nuclear strike. The situation of this unhinged President could not be more dangerous, and we must do everything that we can to protect the American people from his unbalanced assault on our country and our democracy," she said in the letter.

Pelosi said she is also still waiting to hear back from Vice President Mike Pence as to whether or not he intends to invoke the 25th Amendment ahead of House Democrats holding a call on their options on removing Trump from office at noon.

"If the President does not leave office imminently and willingly, the Congress will proceed with our action," she wrote.

-ABC News' Mariam Khan

Trump has been quiet Saturday after Twitter announced Friday evening that it had permanently suspended the president's account.

"After close review of recent Tweets from the @realDonaldTrump account and the context around them -- specifically how they are being received and interpreted on and off Twitter -- we have permanently suspended the account due to the risk of further incitement of violence," Twitter wrote in a statement.

Trump's final tweet said he would not be attending Biden's inauguration.

After Twitter's announcement, Politico reported that the president went "ballistic" and “[scrambled] to figure out what his options [were].”

Hours after his suspension, Trump released a statement criticizing the ban and teasing a possible new platform.

"I predicted this would happen," he wrote in part. "We have been negotiating with various other sites, and will have a big announcement soon, while we also look at the possibilities of building out our own platform in the near future. We will not be SILENCED!"

"Twitter is not about FREE SPEECH. They are all about promoting a Radical Left platform where some of the most vicious people in the world are allowed to speak freely," he added.

Trump had attempted to post the same statement on Twitter using the official @POTUS account, but the platform deleted the thread, saying users who are banned cannot post from other accounts.

Secretary of State Mike Pompeo blasted Twitter Saturday, comparing the ban of the president to something that would happen in China.

"Silencing speech is dangerous. It’s un-American. Sadly, this isn’t a new tactic of the Left. They’ve worked to silence opposing voices for years. We cannot let them silence 75M Americans. This isn’t the [Chinese Communist Party,]" he wrote on Twitter.

Former Ambassador to the United Nations Nikki Haley also took to the platform to draw a comparison to China writing, "Silencing people, not to mention the President of the US, is what happens in China not our country. #Unbelievable"

The White House announced Thursday that the president planned to spend the weekend at Camp David before notifying reporters that the trip was canceled. The president has nothing on his schedule Saturday.

-ABC News' Mark Osborne and Conor Finnegan