QUOTE ('SR4')
Suppressive Fire
Sometimes a character may just use full autofire to make
his opponents keep their heads down. This type of shooting—
where the character saturates an area with bullets without specifically
targeting anyone—is called suppressive fire. A character
using a full burst to suppress can target a triangular area projecting
from the shooting character outward up to a distance of
his choosing with a width of 10 meters at its end and a height
of 2 meters. Suppressive fire takes a Complex Action and uses
20 bullets. The area remains “suppressed� until the shooting
character’s next Action Phase.
Suppressive fire is treated as a wide burst, but for simplicity
we assume that the wide burst and recoil modifiers cancel
out. The character laying down suppressive fire simply makes a
Success Test using Agility + appropriate firearm skill. Note any
hits.
Any character that is currently in (but not behind cover or
prone) or that moves into or out of the suppressed area before
the shooter’s next Action Phase risks catching some flying lead.
That character must make a Reaction + Edge Test (+ Dodge if
on full defense) with a threshold equal to the hits scored by the
suppressing attacker. If the test fails, the character is hit, suffering
damage at the weapon’s base Damage Value. Characters in
the suppressed area who do not move other than taking cover
or dropping prone are not at risk.
Sometimes a character may just use full autofire to make
his opponents keep their heads down. This type of shooting—
where the character saturates an area with bullets without specifically
targeting anyone—is called suppressive fire. A character
using a full burst to suppress can target a triangular area projecting
from the shooting character outward up to a distance of
his choosing with a width of 10 meters at its end and a height
of 2 meters. Suppressive fire takes a Complex Action and uses
20 bullets. The area remains “suppressed� until the shooting
character’s next Action Phase.
Suppressive fire is treated as a wide burst, but for simplicity
we assume that the wide burst and recoil modifiers cancel
out. The character laying down suppressive fire simply makes a
Success Test using Agility + appropriate firearm skill. Note any
hits.
Any character that is currently in (but not behind cover or
prone) or that moves into or out of the suppressed area before
the shooter’s next Action Phase risks catching some flying lead.
That character must make a Reaction + Edge Test (+ Dodge if
on full defense) with a threshold equal to the hits scored by the
suppressing attacker. If the test fails, the character is hit, suffering
damage at the weapon’s base Damage Value. Characters in
the suppressed area who do not move other than taking cover
or dropping prone are not at risk.
the bold sentence is what they were using as a citation for why they thought I was wrong. However I read that as someone who is trying to hide behind cover (ie not get shot and stay hidden) or prone doesn't need to make the check, but someone who is still standing in an area that has some cover due to the environment OR someone who is peeking out from cover or partially exposed (as described in the partial and good cover ranged modifiers) still have to make the check because they are still possibly exposed.
So the sides in the argument were set. I argued for the wording of the RAW's "behind cover" to mean fully covered, and they argued for its meaning to include having any kind of partial cover as well. I tried to cite what a soldier is instructed to do when caught in suppressive fire, which is keep your body covered and your head down (SR equivalent of the "full cover" -6 modifier) to avoid getting caught by a round, and one of the players in our group is an Army reserve Afghanistan vet and confirmed I was right about that.
For some reason the players thought it would be acceptable that when being shot at with the intent to make you take cover and prevent you from attacking that you can hang as much of your body out of cover as you want, but if you have any cover modifier at all you don't have to take the suppressive fire test and won't be hit. As an extension of that belief, since the warehouse had good cover all over for combat, ideally in their minds, they could run around the warehouse all day and nobody could try to get them to seek cover with suppressive fire because they were "behind cover" as per the rules and need not make the check to see if they got clipped.
The argument lasted entirely too long, and it ruined the middle of the session (but came back together for a wicked rescue at a bus depot in downtown Seattle for the climax) and left both sides thinking they were still right. It was only resolved to go back to playing under the grounds that I would ask the forum for the answer, and specifically get an answer from a developer on what they intended by the phrase "behind cover" (either meaning actively seeking cover to not get shot or just having cover modifiers in your favor from the environment) in the suppressive fire passage of the core book. The rest of you are more than welcome to give input however and I'd like to hear some other perspectives as well. If you have any other questions about the scenario that would help, just ask.
Thanks