Tim is absolutely going to have a heart attack as a result of this fight. He hates this, he hates having an armed but un-armored friend running rampant in the middle of a fight. And it's not like he and Nico have teamed up in a fight very often before, so his ability to predict what Nico's going to do is hampered. The sheer panic when the gun goes off and hits where Nico was just a second ago distracts him just long enough that he loses track of one of the guys, and another gun is fired.

It hits.

It takes Tim a moment to realize it hit him, and he honestly feels relief for a second that it wasn't one of the civilians who got hurt because he wasn't doing his job well enough, and it wasn't Nico being found at the other end of the shadow he traveled through. The body armor does what it's supposed to do, it stops the bullet from penetrating skin, and it's going to hurt later but for now he spins around to let the shooter know that wasn't very nice.