I CAN see the briefcase glow, sometimes. Once a player has picked it up, I almost always see their glowing outline, but it is quite glitchy, e.g. they will have moved around but their glow stays in one place and goes all twitchy for a few seconds before jumping to where there actually are e.g. even if I can see the case glow at first, for about 1 second there is no glow at all Usually when a player drops the case with drop_supplies, I can then see the glow, even if at round start I could not see the case
When I am defending, the symbol is a shield. When I am attacking, it is a pent.