Sapper 0AP plant a charge.
Bruno: take the first aid kit, first-aid DC, crowbar S door, save. (Still in uniform for now.)
Sapper: shoot S as needed, any spare shots to E, move S, save if possible.
DC: any further shooting, move S.
Bruno again: use saved action to move S.
Sapper shoots S,needing a 4+ (becomes visible and loses uniform benefit):
@discobot roll 3d6