Hmmm....

Could there be more than one special weapon? I have some continuity conflict in my mind.

The outbreak occurs and Burt runs to his store. When he gets there, the safe had been cracked. At this time, I would assume Latch is still in jail. For this to work, Scratch has to fight her way into a Maximum Security Prison, spring Latch and all the others. Reorganize and then go from the prison (West LA, almost at the coast over to Burt's shop which is on the far side of East LA. They must do this by basically going through Ground Zero on the day of the outbreak and have to accomplilsh this task before Burt gets there. Maybe Burt loligags on the day of the outbreak. But, as a survivalist, I think he would have a go-back and get to his shop pretty damn quick.

I can envision Scratch breaking into Burt's safe and getting the RPG. But, I am hard pressed to see how Latch could could do it.

But, then we still have an incongruity because we know Latch got some sort of weapon out of a safe.