40,000 hours.

Let's assume a team of ten people (and Tucker Carlson likely has more than that) in the news room.

Boom, now it's 4,000 hours.

Let's assume they watch it at double speed. Boom, now it's 2,000 hours.

Lets assume they scrub through it an blaze through all those hours that are shots of empty hallways with nothing happening. What is it now?

Lets assume they have four monitors each, playing four videos at once. What now?

This isn't a remotely difficult amount of footage for a team to analyze. It's not going to take more than a few weeks.