Step 1. Go the Command Room and accept the Field-Op.
Step 2. Go to the Mine Shack, enter the Underground Mine, and walk to the green jacket.
Step 3. Puzzle found! Your mission is to destroy the targets. Enter the X and Y coordinates to fire a cannon at the target. In other words, click on the two lines that the target is on. You have to destroy at least 20 targets before time runs out.
You've finished the Field-Op mission! Here's your medal!
With these medals, you can buy Elite Gear! Each item is worth a certain amount of medals.
Visit us next week for the new Field-Ops cheats!
—Cena12121
