Lost and Found
Head to the next mission marker. You need to climb to tower to find the carrier pigeon Kuo asked you to recover. Use your Alpha Blast to knock it on the ground, then jump down to retrieve your first Dead Drop. Your mission objective will also update and you should be able to collect Blast Shards now. Press L3 to scan the area for nearby blast shards; they will appear as blue dots in your radar.
You just need to collect three blast shards. There are some nearby so you won't miss them. Complete all the objectives and collect them all to complete the mission.
Collect 'em all!
You can now freely explore and collect blast shards before moving to the next mission. Please refer to the Blast Shards Locations map included in this guide for the marked locations and individual screenshots of the shards in New Marais.