This trophy is called "Clear Skies
" and it requires the user to complete the 'A Global Offensive' mission chain.
To view the chain, press the Touchpad to bring up the Character Menu. Use L1/R1 to switch to the Objectives sub-menu and L2/R2 to select Missions from it. Scroll through the missions to find "A Global Offensive" and this is where you can keep track of the chain requirements.
Unfortunately, I did not note when this chain exactly begins, but it for sure begins some point once reaching
Once completing the final location in step 3, the trophy will unlock upon returning to the Quinjet.