Act 1 - War Pig

Enemy Intel Item #12

You'll find the first Intel item of the level when you first enter the city streets area.  Proceed uphill and enter the building to the right with the blown out wall.  Head up the staircase and go into the first room to the left.  Inside, you'll find the Intel item sitting on the dresser.

Enemy Intel Item #13

From the previous Intel item, head back outside to the streets, and proceed into the cleaners directly across.  Once inside, head towards the back of the room and continue up the staircase to the left.  Upstairs, head into the bedroom towards the back of the hallway (first door to the right).  Inside the room, you'll find the second Intel of the level sitting on the bed.

Enemy Intel Item #14

Upon infiltrating the enemy building (with the two turret gunners in the window sill) head up the stairs and continue down the hall to the bedroom (overlooking where you entered).  Sitting on the stack of mattresses, lies the last Intel item of the level.