I try to make sure that my CERT (Community Emergency Response Team) kit will fit in one side of my freighterbike. Otherise, no major changes..
Also, by disaster, I presume that one is speaking of something similar to an erthquake, or New Orleans style evacuation, or such. In my part of Alaska, the CERT are mainly focused on earthquake response since they discovered a major faultline nearby that is due to break loose again; wildfire was also glossed over. Other places vary.