I looked back over the parts where Cole talked to Randall, and there was no mention of the "infected" people being already dead or zombies. As far as I'm aware, the only Warren AFB people who know about that so far (and not all of them believe it) are:
Captain Lereux (from Kimberly)
Lieutenant Malone (from Goldberg)
Javier Ramirez (from Stephanie)
Nathaniel Lewis (from Goldberg)
Alexandria Mikhalin (from Goldberg)
Lieutenant Angela Blanco (from Stephanie)
Zorie Spooner (from Stephanie)
Igor Malanowski (from Goldberg)
Lewis was lucky to hit with the M203. The rules don't specify this, but we've been using Rifle skill to determine whether or not it hits (that's what Mutt, the skinhead with the M-16/203, rolled against). However, as with burst fire, area effect weapons such as grenades cannot be targeted to a specific part of the body. Thus, his chance to hit was 35%. I've been rolling hit locations randomly when someone is caught in a grenade blast or other explosion. Obviously the person is going to be hit in various places, but this is the primary hit location and determines things such as whether a limb is destroyed or if there is a head hit. Also, Alanen was well within the area of effect, so I'll roll a hit location and damage for him as well.
The zombie was hit primarily in the leg, and Alanen was hit in the chest. The zombie has still only taken 3 damage to the head so far, but another 7 will finish it off. Alanen takes
14 damage, but his body armor reduces this by 8, so he only takes 6 damage to the chest. One of the zombie bites was actually on his chest and not his arm. Kevlar still has some effectiveness against hand-to-hand attacks, so that damage would have been reduced, but it does not change the outcome of anything. Thayer's grenade still finished him off.
Fearlessfred, don't forget to roll Sanity for Black since his Spot Hidden roll succeeded, and to take the shot if he doesn't go insane.