Pfizer reportedly faced early supply chain obstacles - WNT.

The Wall Street Journal said the company had found raw materials in production that didn’t meet its standards, but Pfizer said it still expects to have 1.3 billion doses by the end of 2021.

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Vaccine rollout coming up short

Vaccine rollout coming up short

A shortage of vaccine doses in New York City postpones vaccinations for eligible people.

Security heightened for Inauguration Day

Security heightened for Inauguration Day

Former Deputy Assistant Secretary of State Col. Stephen Ganyard discusses how the National Guard and local law enforcement are preparing for any threats on Inauguration Day.

Countdown to Inauguration Day

Countdown to Inauguration Day

A look back at President-elect Joe Biden’s political journey as he is set to become the 46th president of the United States.

President-elect Joe Biden delivers remarks ahead of departure to Washington.

President-elect Joe Biden delivers remarks ahead of departure to Washington.

"I'm truly honored to be your next president," Biden said.

National Guard called, Epiphany celebrated, northern lights: World in Photos, Jan.

National Guard called, Epiphany celebrated, northern lights: World in Photos, Jan.

A look at the top photos from around the globe.