Chapter 15 - The Showdown | Intel Data Sniper Guide

The first laptop (1) is located in the caves - you'll get to these caves shortly after starting this mission. It's best to explore the whole net of caves and you'll find this laptop finally - it is guarded by one man.

The second laptop (2) is located in the yellow painted container near the place where you have to open the gate to free your companions locked with their stolen truck in the garage. On the one side of this container there's a ladder that leads to the roof of a higher building, and on the other side there's a scaffold. You walk on the roof of this yellow container when trying to get to comrades (pictures #21 and #22 of my walkthrough for this mission).

You'll find the 3rd laptop (3) by searching the yellow painted buildings/containers located near the house in which the satchel charges are hidden. There's a bulldozer parked nearby.