After completing the special ops, you will be able to see a report button next to the name of your special ops. To find it :

1. Go to Special Ops tab from left navigation on Dashboard
2. Click on report next to the special ops you've organized
3. Fill in the report and scroll down to the bottom of the page, you will see a big plus sign in dashed box. Click on the plus sign and choose the image you want to upload
4. Wait until you will receive a green message of successful upload
5. The image will display right afterwards.
6. Click on submit report