Derideal ep 5, page 21 (Patreon)

Nail guns most infiltrator use in the comic doesn't have many technological components, so they won't turn off or their safety mechanisms won't be affected by technician skills heh.

anyway, it's a bit silly... but Tech guys need to have some way to affect soldiers, all I can think of is the signal or whatever thing used by the technician triggered the weapons safety mechanisms, they'll be off for a while.

Andrea is the original story is the strongest fighter from the rebel side, she can endure hand to hand combat against FOE officers (episode 4) and I wanted to kept her strong like that in the remake