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We're now inside Fort Bragg, North Carolina, about 250 square miles, about 50,000 active duty soldiers.

Fort Bragg is a city unto itself, sprawling, relentless, and brimming with power.

Soldiers here often call it the center of the military universe.

And when Second Lieutenant Holly James goes missing, the U.S.

Army mobilizes fast, launching an all-out search, working around the clock to find answers.

Good to see you.

Special Agent Al Diaz is the man in charge of the Army's Criminal Investigation Division at Fort Bragg.

What do you remember when the news came out that Holly was missing?

that they succumb to foul play like you just don't know fort bragg sits like a fortress at its heart is womack medical center where holly worked as an army nurse with 13 access points in and out cid's task was clear reconstruct holly's every step in the days before she vanished adam armstrong is a special agent with cid

All right, so you get the call from the police about what was happening that afternoon.

So when we get that, we'll immediately get a picture of her out so we can start working on the reward posters and all that.

And then we start figuring out, OK, how can we start putting together elements to go out and start searching?

Tell us where we're going.

Right now, we're just heading back to the one side of base where Holly was last seen.

Investigators learned that just two nights before she was reported missing, Holly had been seen at a late-night softball game on base.

So this is the last place that she was seen.

Right here on the right-hand side.

So this was the 8th, two days before they discovered that she was missing.

This is where she was.