Private Thatcher. Picked up his bounty and went to work. He's a True Son, one of the guys with the expanding foam launcher on his back. I shot the weak point with my marksman rifle in an attempt to force him to stand up from cover to get the clean head shot. But... he wasn't affected by his own sticky foam. Don't know if the in game rain impacted this but it's the first time I've seen a named enemy unaffected.