Updated (Metal Gear Solid 5: The Phantom Pain)

Crociato
to be honest, no idea)

Did you add skins alone or online?

Misha Lopatin
Swimsuit for guards of guard units of forward bases. Snake, I understand, cannot wear it.
* Swimwear designs are online development items. Develop them by going to [DEVELOPMENT] after obtaining them as an Event Points reward.
* To have FOB security guards wear swimwear, go to [SECURITY SETTINGS] -> [ADVANCED SETTINGS] and set the use of special gear (swimwear).
* Your soldiers can also wear swimwear when invading an enemy FOB, but neither Snake nor your avatar soldier can wear it.
* To view staff in swimwear, after equipping it, go to [FOB MISSION] -> [TRAINING / VISIT DESTINATION] and select your FOB, then proceed to training or visit.
* Mother Base staff in METAL GEAR SOLID V: THE PHANTOM PAIN (the main game) cannot wear swimwear.

Crociato
So there, it seems, and there is no mission to shoot down the drone, at least for me.

RAZOR-GTR
Now I don't. Two options: either I had hallucinations, or when they realized it, they changed the task "Destroy the UAV in a vulnerable spot from a distance of at least 60 m" to kill a guard from the same distance.