Most shelters (at least with the training I've taken) will not allow a pocket knife - sorry. I had a debate about this one with shelter management - I work with an organization that works at the shelters , but not the Red Cross itself (I HAVE taken the complete Shelter Managers course however)

To do MY job (radio comms) I NEED tools, screwdrives, pocket knive, cordage, etc - basically, we came up with "when I need it, I go to my truck, and GET it, and I'm escorted while I have it" - sort of like they deal with the kitchen staff - basically, I'm segregated from the normal shelter population - more so that the population can't take MY stuff. I always thought (given the 3-4 locations where I've drilled) we were better off in a staff room (for quiet, privacy etc), and we use runners and or a field telephone that is in my kit to the main shelter area. In that case, they just allow me to bring my box in, and keep it locked up there