Mission 1: Operation 40 Intels
Intel Location #1: You will find this Intel on a crate inside a building after going up a hill and passing a weapon depot. It will be straight ahead as you enter the building with Woods and Bowman leading the way.

Intel Location #2: You will find this Intel on the dresser inside of a bedroom with a bed and TV in the next area you enter after you have killed the fake Castro.

Intel Location #3: You will find this Intel on top of ladder inside of the first hangar you enter. This will be just after you rappel down from the mountain to the airfield.