One of the red cross' major concerns is the extreme differences in nature that can be found with almost all disasters, and being able to allocate the correct resources at the correct time. It is also a volunteer organization with funding primarily coming from donations, so being able to maintain its workforce and revenue is a constant challenge.
A main concern is the fact that no disaster will ever be the same. A hurricane in one area will be very different in another area, despite the same source of destruction. This is because each areas has a different population, different needs and different services available in each area. The most challenging part is the ability to foresee what might be good resources or equipment or forms of medical care and best to supply at each different disaster since each one is unique.
The largest challenge faced by the ARC seems to be organizing such a large group of volunteers for specific response. There are so many different pieces to disaster respones, and with mostly volunteers organizing things, a strong central leadership is needed, which seems to be lacking in the group as a whole.